Trivia / Treehouse of Horror

  • Actor Allusion: The "Treehouse of Horror II" segment "Bart's Nightmare" parodies the episode "It's a Good Life" from The Twilight Zone, with Bart cast in the role the bratty, powerful child Anthony had in the original story. Nancy Cartwright previously appeared in the "It's a Good Life" segment from Twilight Zone: The Movie, playing a sister of Anthony who ends up getting trapped in a cartoon.
  • Defictionalization: The annual Treehouse of Horror comics.
  • Milestone Celebration: "Treehouse of Horror XXVII" is the 600th overall episode of The Simpsons, which tied with Gunsmoke as the longest running American scripted primetime series (recognized by one of the joke credits, which reads "We're coming for you, Gunsmoke"), and acknowledges this at the end of the opening sequence, where Frank Grimes warns that you'd be forced to watch a marathon of all the episodes in Hell.note 
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