Genre Popularizer

Basically, before these works came along, a genre either didn't exist, or was niche. Then after these works, either the genre became popular, or we got loads of ripoffs which might have From Clones to Genre later on.

Heck, these works might instead create a Genre Relaunch of a once popular genre (whether or not the popularity lasts).

Now this is not proof that a work is therefore awesome by being one of these. Some might think these works are overrated (and not in the It's Popular, Now It Sucks manner). Being an example of this only speaks to the response it gets in Follow the Leader works, not to its quality.

Compare Trope Maker, Trope Codifier, Genre Turning Point.

Contrast Genre Killer.

Anime

 * Arguably, Tetsuwan Atom/Astro Boy launched anime itself.
 * Tezuka is an interesting case, in that his works encompass so many genres, that imitators had to figure out which Tezuka to imitate, which resulted in the rather large amount of diversity in anime and manga (also helping stave off the Animation Age Ghetto in Japan). In short, Tezuka is the reigning king of this trope.
 * Sailor Moon made the Magical Girl Warrior type of Magical Girl into a genre (even though Cutie Honey came first). It's gotten to the point that it's almost the only type of magical girl show you see licensed for release in America nowadays.
 * It's ironic that Sailor Moon itself is not licensed for release in America now.
 * Once upon a time, every Mons show was ripping off either Pokémon or Digimon (which shows how diverse the genre was from the get-go). Now it's par for the course.
 * The games also sparked off the collection RPG trend, which can extend beyond Mons and into almost any game where there are tons of party members to collect. However, Dragon Quest V (which predated both by several years) had almost no human party members for a good chunk of the game. To round out the player's party, the player would tame monsters it fought in the wild, convert them to his party, and subsequently use them to fight other monsters. While not officially released outside of Japan until well after the mon trend was established, this was the third RPG-style video game to feature such a gameplay mechanic, and likely paved the way.
 * At one time, we called them Gundam ripoffs. Now, they're called Real Robot shows.
 * 7 years before Gundam was first aired, Mazinger Z did the same thing for Super Robot shows.
 * And Getter Robo popularized the Combining Mecha.
 * And Raideen the Transforming Mecha.
 * Tenchi Muyo! for the Harem Genre.
 * Dragon Ball for the Fighting Series.

Board Games

 * Dominion and the "deckbuilding game." Thunderstone, Puzzle Strike, Race for the Galaxy... The list is large. There are also even upcoming licensed deckbuilding games based on Blood Bowl, Resident Evil, and Gundam (since Japan seems to love the genre). While Dominion is still regarded as the best and most balanced of them, the others do all feel different and have many new mechanics, keeping the Follow the Leader to a minimum.

Comic Books

 * The Comic Book series, Albedo: Erma Felna EDF and its idea of primarily serious Funny Animal stories for adults was so distinctive that it had its own newsgroup, "alt.fan.albedo," now it's recognized as the first of the Furry Fandom genre.
 * Superman launched the superpowered hero genre into the mainstream.
 * Watchmen and The Dark Knight Returns were this for the "Grim'n'Gritty" works of The late Eighties and early Nineties.
 * Despite Marvel's Secret Wars debuting earlier, DC's Crisis on Infinite Earths proved to have a much greater impact on the creation and evolution of the Crisis Crossover.

Film

 * Though not the first lurking-killer film, the success of John Carpenter's 1978 Halloween kicked off the Slasher Flick of the 80s and 90s. Many tropes of the subgenre can be traced to Michael Myers' first rampage.
 * Mad Max 2/The Road Warrior sparked the whole Scavenger World genre.
 * Star Wars, alongside Jaws, is credited for starting the Summer Blockbuster.
 * Though The Godfather is frequently credit with same. Spielberg and Lucas were the Trope Codifiers.
 * The 1978 Superman movie was the first proof that a comic book-based film could be serious, popular, and good.
 * Although it wasn't the first movie about a giant rampaging animal, the 1954 film Gojira was successful enough to launch the Kaiju genre of film.
 * Night of the Living Dead invented the idea of zombies as cannibalistic, undead monsters that recruit their victims into their ranks. In doing so, it also popularized the concept of the Zombie Apocalypse, even if it wasn't the first work to use it (that would be Richard Matheson's I Am Legend, which used vampires, and indeed served as inspiration for George Romero).
 * NOTLD has also been credited (or blamed), for the trend of bloody gory graphic violence in modern horror.
 * Although Expressionism had been a popular art style in Germany years before, The Cabinet of Dr. Caligari, with its wild sets, Unreliable Narrator, and focus on cinematically recreating a character's unstable state of mind, sparked many of the ideas associated with German Expressionism as a film genre. (By extension, it also influenced the horror and film noir genres, as well as all of Tim Burton's work.)
 * There's Something About Mary started off the whole "gross-out comedy" thing, although the film tends to be overshadowed by the grosser, less funny American Pie.
 * The first two Alien films started off genres of their own, to an extent. Alien kickstarted the "trapped on a spaceship with an alien monster" setting, and Aliens acted as a Trope Codifier of sorts for the Bug War. And it set itself apart from the Starship Troopers novel by making the aliens pure monsters devoid of any type of technology.
 * Two of the very first films to tell a story unwittingly created new genres. A Trip to the Moon was the first science fiction movie ever made and brought the idea of space exploration to the big screen. The Great Train Robbery introduced us to The Western.
 * Watch any Western made between 1900 and 1964. Many of them tend to have a similar formula based around Black and White Morality in form of a hero bringing an evil outlaw to justice, getting the girl, and saving the day (yes, there were exceptions, like The Searchers, but for the most part this was the case). Then Sergio Leone stepped onto the scene and started playing around with things, and by The Good, the Bad and the Ugly, he created Tuco, the sort of outlaw who would normally be playing the villain, who while not neccessarily a good guy, was still somewhat sympathetic, especially during the scene where he meets his brother. Once Upon a Time in the West had an outlaw as a good guy, and Duck You Sucker featured a bandit as the main character. Now start watching some of the Westerns that came later, and you'll notice not only many differences in the way characters are portrayed, but plenty of homages, particularily the Quick Draw made famous by Clint Eastwood in A Fistful of Dollars.
 * Eastwood's films had a major impact on the genre as well. Look at Unforgiven, a brutal take on the reality of the Old West, then look at some of the movies that have come in the years following it, such as the remake of 3:10 to Yuma, No Country for Old Men, and the Coen Brothers' rendition of True Grit. You starting to see a pattern here?

Literature

 * William Gibson launched the Cyberpunk genre with the novel Neuromancer. It is now a staple of film, games, and odd urban fashions.
 * Except that the genre was recognized by SF fans and authors as early as the late '70s/early '80s, when it originally went by the name The Movement, and was mostly in the form of short stories. Neuromancer was the first big novel of the genre, brought it to wider attention, and codified a lot of tropes.
 * William Gibson and Bruce Sterling co-authered The Difference Engine, which launced the Steampunk genre.
 * The Riddle of the Sands is arguably the Genre Popularizer for Spy Fiction.
 * Amazing Stories, the first English language Science Fiction Pulp Magazine, "created" the genre. (The slightly earlier American pulp Weird Tales published general fantastic fiction: Science Fiction, ghost stories, Horror Fiction, et cetera.)
 * Mystery genre launches:
 * The obscure Norwegian writer Maurits Hansen is credited with writing the first detective story, Mordet paa Maskinbygger Roolfsen (the murder of machinebuilder Roolfsen), two years before Poe wrote his first detective story.
 * Some credit ETA Hoffmann's Das Fräulein von Scuderi (which was published 20 years before Hansens' story) to be the first detective story.
 * Edgar Allan Poe wrote the first English detective stories. Arthur Conan Doyle (creator of Sherlock Holmes) once said "Each [of Poe's detective stories] is a root from which a whole literature has developed.... Where was the detective story until Poe breathed the breath of life into it?" Although Poe's detective uses several early forensic techniques, this aspect of the genre arguably didn't fully kick off until...
 * The Sherlock Holmes series popularised the idea of the cerebral, aloof detective examining clues and forensic evidence in order to solve the mystery. The stories helped introduce the public to this new idea of studying clues and information to solve crimes rather than just asking people what they saw and shaking other people until a confession fell out. This was arguably true not just in mystery stories, but in real life; the Metropolitan Police, frequently dismissed up until that point as an inept and corrupt force, began to improve in success rates and public reputation upon taking some cues from these stories.
 * E C Bentley's Trent's Last Case is widely credited with creating the Golden Age Fair Play Whodunnit detective novel. Something of an Unbuilt Trope case, as the title "great detective" character in it gets the mystery completely wrong.
 * Dashiell Hammett kicked off the subgenre of "hard-boiled" detective fiction. While he didn't create the genre on his own, Hammett's works were among the first to be picked up by the public at large. Many of that genre's tropes originated or were made popular in his works, and later authors of hard-boiled fiction (notably Raymond Chandler, author of the Philip Marlowe novels) cite Hammett as the forefather of the genre.
 * On the subject of detective stories, the "True Crime" genre was first created by Truman Capote in his harrowing magnum opus, In Cold Blood. The true story of a vicious and senseless series of murders kicked off an interest in "real murder mysteries," one which continues even to this day.
 * JRR Tolkien is responsible for creating the High Fantasy genre. Despite the priority of Cabell, Eddison, and Poul Anderson, Tolkien was the gold that got cloned.
 * Like Tolkien, Robert E Howard's Conan the Barbarian stories effectively created many of the now-popular Heroic Fantasy tropes. Interestingly, it did this in large part by subverting many pulp fantasy tropes popular at the time.
 * The War of the Worlds by H. G. Wells took an existing genre speculating about foreign armies invading the United Kingdom and gave it a twist by casting as the invaders a race of highly intelligent alien beings invading Earth from another planet. This idea of an 'Alien Invasion' proved somewhat influential.
 * Similarly, H. G. Wells' novel about a man who built a machine capable of travelling through time got people interested as well. The idea of Time Travel itself wasn't new; the idea of someone actually using technology to build a means of travelling forwards and backwards in time was, though.
 * Along with Jules Verne it's probably fair to say that H. G. Wells all but invented modern science fiction, or at least codified it into the form we now recognise.
 * E. E. "Doc" Smith, and the Lensman series, created Space Opera as we understand it. It is scary how much modern sci-fi writers in some cases outright stole from him, or copied without even knowing they had. To put it into perspective, reading the Lensman novels seems horribly cliche now, because every Sci-Fi trope associated with space operas came out of it ranging from inertialess drives, to Dyson Sphere megastructures, to the very idea of the "Neglectful Ancient Master Race" seen in...well every sci-fi series made since. In fact it is generally accepted that the Green Lantern Corps is the Lensman Corps, top to bottom. They even have a member named Arisia, after the planet where the Lensmen went (their Oa) to undergo training to use their Cosmic Lenses (GL rings).
 * Mary Shelley's Frankenstein not only kick-started modern horror, but was a proto-science fiction story as well Two for the price of one -- not bad.
 * She also kicked off the post-apocalyptic genre with "The Last Man".
 * HP Lovecraft launched Cosmic Horror with any number of his stories, although The Call of Cthulhu", At the Mountains of Madness and The Whisperer in Darkness'' stand out.
 * Tom Clancy pioneered the "military technothriller" fringe genre.
 * Although Craig Thomas wrote the novel Firefox which predated The Hunt for Red October by several years (Firefox was published in '77, and made into a film by Clint Eastwood in '82. Red October was published in '84 and made into a movie in the mid '90s)

Live Action TV

 * Star Trek created the Wagon Train to the Stars genre.
 * Not so simple. Lost in Space premiered a year earlier. Both became Dueling Shows for a while, and BOTH helped shape the genre as they became massive hits.
 * Bewitched's popularity in Japan was enough to spawn the Magical Girl genre.
 * Similarly, I Dream of Jeannie is the ancestor of the Magical Girlfriend genre.
 * Although The Real World and Cops came first, they did not define the Reality Show genre. These two ran for years prior to the introduction of Survivor, but were not in a format that could easily be adapted to other subjects. Survivor's format was easily adaptable, and it went on to define the most common form for Reality Shows.
 * The X-Files started a new trend of conspiracy and paranoia shows.
 * Hill Street Blues introduced the idea of multiple, intertwining Story Arcs to prime time television series.
 * Babylon 5, along with The X-Files, popularized the Myth Arc in live-action television series.
 * Big Brother, while not the first Reality Show of its type launched it. It was itself based off The Truman Show
 * ...which was, itself based on a Twilight Zone episode from 1985.
 * Seinfeld, aside from being unfunny, isn't all that far removed from the other Slice of Life TV shows and webcomics that followed.
 * CSI launched the Forensic Drama genre.
 * Lost seams to start "Weird shit with much emphasis on characters" fashion if modern day speculative fiction dramas.

Music
""If you tried to give rock and roll another name, you might call it 'Chuck Berry'." ~John Lennon"
 * Chuck Berry and rock and roll music.


 * Elvis Presley smuggled rock and roll and other styles of African-American music over the race barrier and into the mainstream.
 * Bill Monroe and the Bluegrass Boys created a distinctive sound that was picked up by other groups and became a genre, bluegrass.
 * The Beatles may not have been the first to do pop-rock and folk rock, but they certainly jump-started the genre. They could also arguably be considered this for psychedelia, album-based rock, and punk with songs like "Helter Skelter." Plus, they created the trend for a self-contained band, with the artists playing their own instruments and writing all of their own music.
 * Nirvana was the band who made the Grunge movement move up to full speed.
 * The Rolling Stones did it for Blues Rock
 * The Velvet Underground and Alternative Rock.
 * While quite a few other bands and albums had come before it, King Crimson's debut 'In the Court of the Crimson King'' was arguably the first full progressive rock album (rather than the more psychedelic sound that had come with the earlier bands), and laid the foundations for the genre.
 * The Post Rock genre was launched by Slint's Spiderland album and Talk Talk's Laughing Stock.
 * UK speed metal band Venom usually get a lot of credit for laying the roots for what is now known as extreme metal.
 * British Grindcore band Napalm Death (whose drummer actually coined the term "grindcore", along with the term "blastbeat", a drumbeat regularly used in the genre and beyond) are often heavily credited for their importance in the development of grindcore.
 * Norwegian band Mayhem, and specifically their original guitarist Euronymous are usually said to have created Black Metal as we now know it.
 * Rammstein is usually considered the creators of Neue Deutsche Harte, either a a sub-genre of industrial metal or a fusion genre of industrial metal and trance, depending on how one views it, though they originally called it dance metal. However, they are merely the codifier. the actual creator was Oomph!, who formed five years before Rammstein.
 * Joseph Haydn almost singlehandedly developed the sonata form and was the first big composer of the First Viennese School.
 * Similarly, Arnold Schoenberg was the godfather of the Second Viennese School.
 * Claude Debussy's Prelude to the Afternoon of a Faun is said to be the work that truly began musical Impressionism.
 * Ice T did this for Gangsta Rap
 * Grandmaster Flash And The Furious 5 help launched Political Rap, And before then there were 1970s political preachers such as The Last Poets and Gil Scott-Heron.
 * Jokingly, a-ha launched the new genre of 'Pof' during an interview in which the German interviewer badly flubbed the words 'synthetic pop of the eighties'. Moments later it became New Pof, much to Magne's surprise and delight.
 * The Pogues blended Irish traditional music and punk as what became the first example of Celtic punk, a style taken up by Irish and Scottish inspired bands in both Britain and North America.
 * British band Skyclad began adding folk elements to their otherwise rather ordinary thrash metal, creating folk metal in the process.
 * Norwegian black metallers Bathory switched out the over-used Satanic lyrical content of their compatriots for Norse mythology and history, creating the thematic genre viking metal.
 * British rockers Motörhead are widely recognised as one of the first bands to blend punk and heavy metal, creating what later became known as "speed metal", the forerunner of thrash. Frontman Lemmy Kilmister characteristically dismisses such labels, declaring that "it's all just rock and roll".
 * Ramones unintentionally launched the Pop Punk genre.
 * Burzum pioneered atmospheric/ambient Black Metal, although some have pointed out that a few scattered ambient black metal projects existed before Burzum.
 * All Music Guide has described Job For A Cowboy as both the Genre Popularizer and Genre Killer for Deathcore.
 * Ray Charles is generally considered to have launched Soul; the question is whether he did it with "I Got a Woman" or "What'd I Say."
 * Christian Rock is arguably more of a scene than a genre, but in either case, Larry Norman's 1969 album Upon This Rock was the launching point.
 * Country Pop, although existing from the late 1950s, really took off in the late 1970s with Kenny Rogers and Dolly Parton topping both country and pop charts at the same time.

Puppet Shows

 * Spitting Image launched political puppet shows in numerous different countries, many of which are well-received amongst the audience.

Tabletop Games

 * Dungeons and Dragons began as an offshoot of the miniature wargame Chainmail and became the first Tabletop RPG, launching the genre. Unlike many other popularizers, it's still the alpha dog.
 * Ditto for Magic: The Gathering and trading card games.
 * Champions is responsible for creating the point buy system.
 * Tabletop wargames using miniature figures have existed for centuries, especially in the Prussian Army where they were used to train officers in tactics. It wasn't until H. G. Wells published a book of rules called "Little Wars" (subtitled "A Game for Boys From Twelve Years Of Age to One Hundred and Fifty, and for That More Intelligent Sort of Girl Who Likes Boys' Games and Books") in 1913, that the general populace got to play one.
 * Even then, they weren't tremendously popular until Jack Scruby created his line of miniatures, which made the genre burgeon.

Video Games

 * King's Quest popularized the graphic Adventure Game genre.
 * Doom launched the First-Person Shooter genre, to the point that other games in the genre were simply called "Doom-clones" or "Doom-likes" before a more neutral name was coined. However, its predecessor Wolfenstein 3D was the first really successful example of the genre.
 * Nintendo has admitted they want this to happen with the Wii controller, as it happened with their d-pad and Atari's analog control. This is likely why they didn't raise a fuss when Sony introduced their motion controller.
 * Super Mario Bros. defined the side-scrolling action platformer genre as we know it.
 * Super Mario 64 is the predecessor to almost every 3D platformer in existence.
 * Fighting games have existed since before the Atari, dating as far back as Sega's Heavyweight Champ in 1976, but it was Street Fighter II that finally got it right in 1991 and launched them as a genre.
 * Worms was certainly not the first artillery oriented game, but it is both the most well known and generally best designed of the bunch.
 * Any game that has Mons and you need them to form you party will be considered a Pokémon ripoff, even if Pokémon wasn't the first game to do so.
 * The smash-hit ASCII game Rogue from 1980 popularized the concept of randomly generated dungeons, and spawned enough spinoffs and ripoffs to boggle the mind. Even today, games of this genre are referred to as "Roguelikes".
 * The Elder Scrolls for sandbox first-person RPGs.
 * Beatmania may not be the first Rhythm Game, but it set the standard that many rhythm games would soon follow--games such as Dance Dance Revolution, DJ MAX, Guitar Hero, among others. Guitar Hero in turn brought instrument-based rhythm games to the western market.
 * Back in 1992, Strategy Games were nearly all turn-based. Then Dune II came along, though admitedly there were a few earlier Real Time Strategy games, most importantly Herzog Zwei. Nevertheless, it was Dune II that spawned imitators and launched the RTS genre.
 * Which is debatable, as one could see Dune II being to the first Command and Conquer what Wolfenstein 3D was to Doom.
 * Tomb Raider was the game that kicked off the 3D Action Adventure genre.
 * Tetris pioneered Falling Blocks puzzle games.
 * And, as mentioned above, the "simple puzzle" genre.
 * Dragon Quest took cues from Wizardry and Ultima but specifically simplifed those games for a wider audience. The result defined the JRPG genre, and created most of the major tropes used therein.
 * Ultima Online was thought of as a graphical Multi-User Dungeon. Now we refer to it as a Massively Multiplayer Online RPG.
 * What started as a popular Custom Map genre for Starcraft and Warcraft has become the Tower Defense genre.
 * Similarly, Defense of the Ancients now has several spinoffs and more in the works.
 * Double Dragon set the basics for the Beat'Em Up genre, but it's Final Fight that caused games of this type to flood the market.
 * And Double Dragon was the technical and spiritual successor to Renegade, made by the same company, and whaddaya know, it's the predecessor to River City Ransom. Granted, Renegade wasn't actually good, but it still counts.
 * Devil May Cry arguably began the "spectacle fighter" genre, with such other entries as God of War, Viewtiful Joe, God Hand, MadWorld, and Bayonetta.
 * Some reviewers have even questioned the labelling of God of War as a spectacle fighter (due to its focus on story and atmosphere, the adventure gameplay and the noted lack of any "score" beyond the amount of orbs), and started calling it part of its own genre, joined by Dantes Inferno, Heavenly Sword, Darksiders, X-Men Origins Wolverine and Conan. Current name for said genre? "Being God of War". Currently, not many other series are good at it. This has led to a degree of hostility between fans of the two archetypal series
 * Grand Theft Auto III for Wide Open Sandbox games. Often with Villain Protagonists or at least the option to play like one.
 * At the dawn of the 1980s, someone got the idea to move role-playing games onto a computer. Thus was born Wizardry, the first Western RPG and the direct ancestor of the Eastern RPG. Rogue came out a year earlier, but it spawned its own genre which had very little influence on mainstream RPGs until Diablo and Arena.
 * Even though Sweet Home and, to a greater extent, Alone in The Dark, were the first to use the classic gameplay model, it was Resident Evil that launched the Survival Horror genre and gave it a name.
 * Similarly System Shock for the... uh... "other Survival Horror genre".
 * Flight Control for the iPhone could be said to have launched the "path tracing" genre of game, which is uniquely suited to the device's touchscreen interface.
 * Myst is often credited with starting the trend of adventure games set in a Beautiful Void.
 * An earlier Cyan game, The Manhole, introduced us to Pop Up Video Games.
 * The Metal Gear and Thief series defined the Stealth Based Game genre for years to come.
 * Those casual Time Management Games you see everywhere on the internet nowadays? You have Diner Dash to thank or hate for that.
 * Prince of Persia: The Sands of Time started the whole "parkour platformer" sub-genre that includes Assassin's Creed and Uncharted.
 * And before that, the original started the Cinematic Platformer sub-genre.
 * Twenty years before Eve Online, Elite on the BBC Micro paved the way for all 3D space simulators, and particularly space trading and open sandbox games.
 * And before Elite, Star Raiders on the Atari 800 took the basic Trek-style top-down gameplay from the mainframe era and created the 3D space sim.
 * Spacewar is the Ur Example of the shooter genre, but Space Invaders is the Trope Maker that launched the shmup genre, with its vertical view still used in modern shoot 'em ups.
 * Fantasy Zone and Twinbee were the first Cute'em up.
 * Batsugun was the first Bullet Hell shmup, but Battle Garegga was the more popular example, though Recca is responsible for the subgenre's origins as well.
 * But for all of that, it was humble, simplistic Pong Spacewar!  Tennis for Two OXO that kicked off the entire video game craze. Without OXO, none of these other examples would exist.
 * Going back to the earliest days of any video game, Colossal Cave (also known as Colossal Cave Adventure, Adventure, or simply ADVENT) was the first Adventure Game, leading into both Interactive Fiction and Point and Click adventure games, as well as sparking the whole Dungeon Crawling genre. One could even argue that ADVENT was the first computer game ever to be more than just a puzzle or sports game--while it's pretty light on story, the wide variety of environments, objects, and NPCs, even if they were just described in text, was far beyond anything else at the time.
 * Minecraft: Is very much like Doom in that while it was not the first sandbox cube building game, it was the first to make it big and inspire numerous clones and 'clones'.
 * While the first person dungeon crawler was a rather popular genre at its peak, Etrian Odyssey has caused a new wave of such games to appear, making it a Genre Repopularizer.
 * Kaizo Mario World and I Wanna Be the Guy did this for Platform Hell. Sure, it existed before in the form of a SMB 1 hack and a Japanese flash game, but once those two came around, the flood gates opened and clones were springing up all over the place. There's a reason I Wanna Be the Guy has a fan game section, or that Kaizo has become a generic term for any ultra difficult Super Mario World hack...

Web Original

 * First there was Yu-Gi-Oh the Abridged Series. Then there were imitators. Now The Abridged Series is a genre unto itself. Sturgeon's Law still applies, but since there are so many, there are now plenty of gems to find. So Little Kuriboh has now gotten into a (joke) war with the other creators.
 * The Zero Punctuation review of Mercenaries 2 comments on this phenomenon; Yatzhee decides to not use the term "GTA clone" when the Wide Open Sandbox has become so common, and compares it to what happened with Doom, above. (But then goes on to say that many such games, including Mercenaries 2 itself, do still deserve to be branded as "Grand Theft Auto clones" because of how directly they copy the formula.)
 * Judging from two of The Escapist's other series, Escape to the Movies and Extra Credits (as well as Moviebob's other series The Game Overthinker), it looks like Zero Punctuation itself has launched a genre.
 * All 4 only really share cosmetic similarities. That is, that a person talks about a particular work or subject for 5-10 minutes while a series of stills illustrate the points. Yahtzee is an acerbic game critic, Escape to the Movies is a film review show, The Game Overthinker is a bunch of mediations on retro games and Extra Credits is a series of serious discussions about various aspects of the gaming industry and its growth as an artform by people who work within the industry itself.
 * Toastyfrog's Evangelion Thumbnail Theater touches off a brief fad of anime series-based Thumbnail Theaters.
 * AMV Hell started a style of Gag Dub. It even quotes the last line from the Cowboy Bebop text at the start of AMV Hell 4.
 * Ruby Quest launched the co-operative image board genre. To the point that the games being called quests.
 * Xiao Xiao spawned a lot of stick figure fight scenes (and perhaps fight scenes for Flash itself) as soon as the third installment got Weekly User's Choice at Newgrounds.
 * When YouTube first came out, some amateur filmmaker decided to put two parody video game reviews for some old NES titles up on it. Now it seems like every third gamer or so insists on trying to become the next AVGN.
 * Likewise, The Nostalgia Critic has gotten quite a few imitators - and quite a few so good, he's teamed up with them!
 * Most of the genres on YouTube have been created this way, for example the Slice of Life vlog style made famous by Kevin Nalts, aka Nalty.
 * Freemans Mind launched the "X's Mind" genre, showing what Heroic Mimes are really thinking.
 * "Hyakugojyuichi" by Neil Cicierega launched the Animutation genre.
 * Horror web series and ARGs were seen sporadically during the Turn of the Millennium, but it wasn't until Marble Hornets and Just Another Fool that they really took off. Aside from more directly influencing the direction of The Slender Man Mythos, they also inspired the creation of other horror series such as The Fear Mythos.
 * Slowbeef's let's play of Super Metroid made Let's Play a video and live-commentary based internet sensation, as opposed to what it used to be where you just took screenshots every few minutes of gameplay and had typed commentary on it.

Webcomics

 * Neglected Mario Characters was the original Sprite Comic, and spawned a swarm of imitators. Bob and George, however, is usually thought of as the father of sprite comics, with thousands of imitation comics coming out (and often promptly dying) in its forums.
 * Penny Arcade: started a thousand couches.
 * Kevin and Kell was the first webcomic so manage a consistent, reliable daily schedule. The cartoonist, Bill holbrook, had not one but two daily comics in newspaper syndication when he started K&K, and brought the same degree of professionalism and discipline to the new distribution medium.
 * Homestuck and MS Paint Adventures have spawned hundreds of imitators not just of the Interactive Comic genre, but of the Text Parser presentation style of MSPA itself; some of these are followed by hundreds of people and come close to matching MSPA's legendary update rate.

Western Animation

 * The Flintstones with prime time animated sitcoms.
 * Then after it faded, brought back by The Simpsons (who Lampshaded their debt to The Flintstones more than once).
 * After The Dark Age of Animation, several television series stand-out as being the inspiration for the wave of high-budget high-quality work that would follow in the nineties: Ralph Bakshi's New Adventures Of Mighty Mouse (a low-rated and controversial show that none-the-less inspired a generation of animators) and the one-two punch of Adventures of the Gummi Bears and DuckTales (which proved that high-budget animation on television could be lucrative).
 * Likewise, The Little Mermaid prompted a new wave of Disney musicals, desperately needed by the company after being stomped during most of the 80s by the work of Don Bluth.
 * Batman: The Animated Series inspired a new slew of more serious western animation, much of which being updates of superhero comics. Besides the future shows produced by the same team for the DCAU, among the more successful ones are X-Men, Spider-Man: The Animated Series and Gargoyles.
 * BTAS also made cartoony stylization respectable for Western action-adventure animation, rather than the uneven attempts at realism that had dominated the genre since Jonny Quest.
 * Jonny Quest started Hanna Barbera's line of cartoons that feature realistic depictions of the human figure, including the original Space Ghost and Bird Man.