Trivia: Professor Plum reveals that he works for UNO, the United Nations Organization, in a branch called WHO, the World Health Organization. As such, he works for UNOWHO (You Know Who).
Trivia: This is the first movie in human history to ever to feature a fully CG (computer generated) character when the knight emerges from the stained glass window. Computer graphics had existed prior (Wrath of Kahn), but never once to simulate an on-screen character.
Trivia: This film is notorious for having undertones and themes that many perceive as homoerotic, and the events of the film are often perceived by critics as a personification of the lead character Jesse being tormented by being "in the closet" and unable to be true to himself. While the makers of the film initially denied that this subtext was intentional, screenwriter David Chaskin recently admitted that the subtext was intentionally written into the script in order to give the characters and story depth.
Trivia: Here are some interesting tidbits about where some of the aspects of the movie came from, which is a compilation of the books following the first. Jack Pumpkinhead, the Powder of Life, the Gump, Mombi, Ozma (Tip) and the escape off the top of the roof all come from 'The Marvelous Land of Oz'. The multiple heads angle, the Gnome King's Nick-Nack game, the chicken coop, Billina, and Tik-Tok all come from 'Ozma of Oz'. The tunnel under the Deadly Desert that Mombi uses to get to the Gnome King seems to come from 'The Emerald City Of Oz'.
Trivia: Gary Busey ad-libbed a majority of his lines. When director Daniel Attias told Stephen King about this, Stephen said he was OK with it.
Trivia: Director Norman Jewison's daughter Jennifer appears as a female patient.
Trivia: The hat that Fletch wears at the end of the movie is the same hat that Harry Dean Stanton wore in the 1979 movie "Alien."