Nostalgia Critic/Shout Out

In the review of The Room, at the end:

Oh my God, I've traveled back and forth so much that it must have altered the present! What if the machines have taken over? What if humans and apes have switched places? What if all cops are judge, jury and executioner? What if Chris Tucker's a sci-fi radio announcer in a dress?

In the Mighty Morphin Power Rangers movie, the Critic's impersonates Adam about "Going into anime", which is quite true in that Johnny Yong Bosch (Adam's actor) went on to become one of the most well-known anime voice actors today.
In his Red Sonja review, the Critic references Brigitte Nielson's relationship with Flavor Flav a few times... Even though she ended up marrying someone else.
Whenever actor Tim Curry is featured in any show/movie that the Nostalgia Critic reviews, it's often accompanied by either a picture/video of Dr. Frank N Furter and/or the song Sweet Transvestite playing.
The end of the the Charlie and the Chocolate Factory edition of "Old vs. New" is a spot-on recreation of the ending to "Duck Amuck".
- Notably, the Critic character is largely inspired by Daffy Duck (As made clear in his Animaniacs interview.)
In the Top 11 F* ck Ups video, the Critic acknowledges that he repeatedly called the forklift in Barb Wire a bulldozer, and says that because of it he missed out on the obvious reference.
In his review of A Troll in Central Park, the Critic shows |a house imploding after the movie is shown to its wall. The father responds with "should've rented Iron Giant".
In his review of Mr. Nanny, he mentions that Precious was a good movie
In his review of IT, while drunk, he quotes some of Lucille Ball's lines from I Love Lucy when she got intoxicated from drinking vitamin tonic.
The title card for his review of The Pebble and the Penguin shows Skipper, Kowalski, Rico and Private carrying off one of the penguins from that film.
He ends his Ten-Minute Retirement with a triumphant rendition of "Poor Jack."
- From the same episode, the title card has the art style of the Red Bull commercials (with wings to boot).
- When he's angsting at the end of My Pet Monster, the "Lonely Man" theme to The Incredible Hulk plays.
In "You're A Dirty Rotten Bastard", Angry Joe blows up Canada while he was President, kind of like the way Ren blew up Australia.
In his review of Ernest Scared Stupid, he made a reference to Trogdor.
In his "Inspector Gadget", when making a gag about what the Gadgetmobile would sound like if voiced by Chris Tucker, the Gadgetmobile got pissed about Gadget touching his radio.
A Shout-Out to Star Trek: Enterprise in the review of Fern Gully: When Crysta and Zak put their hands together and a sphere of light forms around said hands, the Nostalgia Critic and Chick do the same--and then the Chick says "Now you're pregnant."
His Catch Phrase, "Why top eleven? Because I like to go one step beyond," is a reference to a similar catch phrase on the now forgotten TV show One Step Beyond.
From his review of Captain N

Nostalgia Critic: *smiling* Oh yes! I remember that magic element that was mean to bring back the evil that was almost destroyed... in fact, I was there. (background music starts to play; serious expression) I was there when the strength of men fell.

flashback starts*

Nostalgia Critic: Throw it into the fire!

Mario stares quietly with the element in his hands, thinking*

Nostalgia Critic: *desperate* Destroy it!
Mario: *calmly* A-no. Suck my big fat meatballs. *Mario runs away*
Nostalgia Critic: Mario... MARIOOOOOOOOOOOOOOOOOOO!!!
Nostalgia Critic: (narrating; flashback ends) It should have ended that day, but there were no strength left in the world of plumbers. *back to normal* Anyway...

From his review of "Milk Money", after pointing out everything that's wrong with the scene of the prostitute in the classroom, he then screams "HALLELUJAH! ...HOLY SHIT! Where's the Tylenol?"
The title card for the "Care Bears in Wonderland" review has the Critic in a bloodstained blue dress and cutting off a Care Bear's head with a knife.
In His "Avengers", review, he makes a nod to Andy Panda and Winnie the Pooh.
Clips from A Garfield Christmas appear in both his Cartoon All-Stars to The Rescue and Return of The Christmas Specials reviews.
In his first video reviewing Nostalgic Commercials, he ends the video by singing Poor Jack of all things! And the lyrics are almost entirely preserved, save for necessary changes. Heck, ZERO even shows up to give the Critic a Santa Claus hat! It came out of nowhere, but it blew me away.
In his review of Mortal Kombat: Annihilation, during the muddy fight scene between Sonja and Mileena, his brother, Bhargav, and another guy pop in on-screen and loudly ogle the two chicks.
His Running Gag "You know--for kids! is a line from The Hudsucker Proxy.
In his review of Star Trek III: The Search For Spock, when Sulu says not to call him "tiny", NC quips that instead of saying "tiny" we should say "Takei". This is a shout-out to George Takei's campaign against Tennessee's so-called "Don't Say Gay" bill.
In his review of Star Trek V: The Final Frontier, he believes that the Cowardly Lion has been cast in the role of God due to similar appearances.

"I'm the messiah, I'm the messiah, hallelujah!"

In the Alone in The Dark review, Linkara at one point says "I need scissors 61!".
In the Alien: Ressurrection review, when Ripley is being resurrected after two hundred years, the Critic muses about how may rap battles could come from such a concept.