Jimmy Fallon

Charmingly boyish actor, comedian, and talk show host born September 19, 1974. Best known for his work on Saturday Night Live, where he gained success at a young age but also garnered criticism for his shameless mugging and cracking up on-camera during sketches (particularly those where he's partnered with Horatio Sanz), a fact that Family Guy pointed out on the episode "Don't Make Me Over" (who also predicted that Fallon would be one of many former SNL cast members to come back and host an episode). His largest success on the show was as the co-anchor of "Weekend Update" with Tina Fey which showcased his strengths as a comedian. When Fallon left SNL at the end of the 2003-2004 season, he attempted a movie career, which did not go well.

After a string of film flops, SNL exec producer Lorne Michaels signed Fallon to a holding deal with NBC in 2007, and in 2009, he replaced Conan O'Brien as the host of Late Night. Despite lukewarm early reviews, Fallon and his staff have succeeded in turning the show into one of the most buzzed-about shows in the late night pantheon, due in part to their upbeat, optimistic approach to comedy and their use of extravagant pre-taped features, such as parodies of Glee ("6-Bee"), Lost ("Late"), Real Housewives ("The Real Housewives of Late Night"), True Blood ("Suckers"), and Jersey Shore ("Jersey Floor"). He released a comedy album, The Bathroom Wall, hosted the Emmys in 2010, and has written two books, I Hate This Place: A Pessimist's Guide to Life and Thank You Notes (the latter based on a popular Late Night bit).

As of 2014, he replaced Jay Leno as the host of The Tonight Show, definitely moving up in the world. Fallon now competes against Stephen Colbert on two fronts -- timeslot and Ben & Jerry's ice cream flavor (Fallon's is called "Late Night Snack").

Jimmy Fallon provides examples of the following tropes:

Affectionate Parody: Fallon sends up the hype surrounding openly-Christian American football player Tim Tebow with "Tebowie", a hybrid of Tebow and Glam Rock-era David Bowie. The pastiches of "Space Oddity" and "Ziggy Stardust" have lyrics patterned closely after the structure and subject matter of the original songs while being Tebow-specific, and the costuming, makeup, and even camerawork (in the latter case, it's remarkably similar to that of Bowie's 1973 concert film) bespeak great familiarity with Bowie's work. (Fallon's impression of Bowie dates back to some 1999 SNL skits.)
Animals Hate Him: Exhibit A: "Jimmy Fallon is Afraid of Animals".
Ascended Fanboy / One of Us: He's an avid gamer, idolized John Belushi growing up, and skipped parties in college to watch SNL. Even now, you can often tell how genuinely excited he is to be interviewing people like Paul McCartney on his own show.
Berserk Button: Do not put mayonnaise on his food. In fact, don't even bring it up in conversation.

Somebody will come for a cooking segment on my show and they put mayonnaise and I go yuck, I hate mayonnaise. I hate mayonnaise. I think it's the most disgusting condiment that exists.

Corpsing: (In)famous for cracking-up during SNL skits.
Estrogen Brigade Bait: Particularly during his SNL years. Lampshaded on a season 28 episode hosted by Sarah Michelle Gellar, when a family of vampires (played by Chris Kattan, Chris Parnell, and Amy Poehler) only stuck around to watch SNL so they can bite Jimmy Fallon.
- Tina Fey stated that she cast Jonathan Bennett as the romantic male lead in Mean Girls because he resembled Fallon.
Precious Puppies: "If Puppies Could Vote"
Hahvahd Yahd in My Cah: NOMAH!!
Likes Older Women: His wife is seven years his senior.
Retraux
- 2010's Video Game Week had the opening credits and theme music presented as they would have been in an 8-bit Nintendo game.
- The "Cupid's Arrow" skits, supposedly footage from a video dating service that once operated out of Studio 6B, do indeed look like clumsily-edited VHS material from The Eighties.
Self-Deprecation: He's pretty cute in interviews, claiming he just works with really funny people and isn't so great himself, and readily admits to still getting incredibly nervous before big gigs, saying he was shaking with nerves backstage before his awesome opening performance at the 2010 Emmys. Aww.
- He also acknowledged his Corpsing problem during his opening monologue/song when he hosted SNL.
Shout-Out: He likes to have guests play Password, with a rather authentic re-creation of the set.
Team Switzerland: During the Tonight Show conflict, Fallon was the only major late night host to refuse to take sides, calling O'Brien and Leno "two of my heroes and two of my friends."
The Pollyanna
Those Two Guys: With Horatio Sanz on SNL.
Verbal Tic: Referring to his guests as "My man."