The TV screen with the blue color and the same as the Simpsons end credits.
The (now-defunct) Madison, WI-based ska band I Voted For Kodos took their name from Homer's line at the end of the "Citizen Kang" segment.
When Kang and Kodos turn into Bob Dole and Bill Clinton, the resulting light has been cut in TV airings to avoid seizures.
In this episode, the Gracie Films logo has an even higher pitch scream, which is slightly more scary than the original scream.
The Hunchback of Notre-Dame: Hugo, representing Quasimodo, is living up in the attic.
Basket Case: Hugo wanting to be sewn back together.
The King and I: The segment title, "The Thing and I," is a parody of the film and play, The King and I.
Twilight Zone: "The Genesis Tub" is inspired by the 1962 Twilight Zone episode called "The Little People," where astronauts stumble upon a tiny civilization on an asteroid.
The Outer Limits: "The Genesis Tub" also closely resembles the two-part series premiere of the modern incarnation of "Outer Limits" titled "Sandkings" (parts I and II respectively) which first aired a year and a half prior to ToH VII. The main character "grows" his own mini-civilization which experiences rapid generational advances, and begins to build complex structures out of the sand. The main character becomes power-crazed with a "god complex."
Claw Game: The way Homer is abducted is reminiscent of the claw game (giant claw picking him up) and its difficulty (dropping him first time around).
Citizen Kane: The segment title, "Citizen Kang," is a parody of the 1941 film Citizen Kane.
Scooby Doo: When Homer unmasks the presidental-candidates Scooby Doo and his gang have the same reaction of Ripping off the masks of the villains.