Trivia: Outside the greenhouse where the abducted kids are being held are posters for the Weak Alibis, the Missing Notes and Rough Sects, which were bands that either appeared or were mentioned in the season 2 episode "Stuck on You." (00:37:40)
Trivia: The intro for season 2 features shots of the heroes battling a big green monster called Giganto in the streets. This is a recreation of the cover of the very first issue of Fantastic Four.
Trivia: The Observer appears in the hospital. The agents walk pass him on their way to see the dead man-baby. (00:09:20)
Trivia: At the beginning of the scene where Clara persuades Rigsy to give her his chronolock, a poster can be seen on a wall in the background, reading "DeLorean" (a Back to the Future reference) in Aurebesh (the writing system from Star Wars). (00:25:00)
Timberly Loves Arnold / Eugene, Eugene! - S5-E22
Trivia: In "Timberly Loves Arnold", when Timberly shows Arnold her flower drawing, as Sid says, "Look, it's a flower named Arnold," part of his shirt is invisible in the first frame of the shot. This can only be spotted in slow motion or with pausing, therefore it's under trivia. (00:02:22)
Batman VS Iron Man (DC VS Marvel) - S4-E10
Trivia: The car that Batman slides over when avoiding Iron Man's blasts is the same car from the mini game in Street Fighter II, where players would beat up the car and tear it apart as fast as possible for more points. (00:04:43)
Trivia: As of this episode, credits change due to the 9/11 attacks: Twin Towers next to Sarah Jessica Parker's name and the show's title are replaced with the Empire State Building and a different skyline, respectively.
One Man's Worth: Part 1 - S4-E1
Trivia: The man that aids Wolverine in the coffee shop is Johnny Strabler, Marlon Brando's character from the film "The Wild One." (00:16:45)
Trivia: Author Tess Gerritsen, creator of the series of novels upon which the TV series is based, appears as an author at the mystery writer convention.
Trivia: Stan Lee has a cameo in this episode as the man having his shoes polished next to Stark and Jarvis.
The Karate Kid Returns - S6-E14
Trivia: At the end of the episode when Jill is asking to sing with the Beach Boys, Wilson's entire face is visible for a split-second (for those unfamiliar with the show, one of its running gags is that Wilson's face is always partially obscured, usually the lower half). (00:21:10)
The Sponge Who Could Fly (aka The Lost Episode) - S3-E16
Trivia: The miner who gives Patchy the video tape is Stephen Hillenburg, the creator of SpongeBob SquarePants. (00:04:53)
Trivia: An R2-D2 with a wig is visible on Junior's shelf. A nod to Cleveland playing R2-D2 in the Family Guy Star Wars trilogy.