Trivia: In the scene where Anna is outside the gates during "For The First Time in Forever", you can see the backs of Flynn and Rapunzel from "Tangled".
Trivia: After the guests leave and Randy is alone on the couch watching Halloween, right as the ghost-face walks in, the Halloween theme begins. In Halloween the beginning of the theme means the shape is near.
Trivia: Patrick Swayze refused to do this movie if Whoopi Goldberg was not given the role of Oda Mae Brown.
Trivia: This was Johnny Depp's first movie.
Trivia: While giving a lecture at the Hollywood Scriptwriting Institute, director Joe Dante trash talked the novel "The Howling" on which the movie is based. One person in the audience raised his hand and asked, "So, you don't like the book, huh?" with Joe stating, "No, not really." The man responded that he was the one who wrote the novel. To Joe's surprise, the man in the audience was Gray Brandner, the author of "The Howling."
Trivia: In the film, the two transfer students are Kiriyama, the silent killer, and Kawada, the winner of a previous Battle Royale. In the original novel, only Kawada was the transfer student; Kiriyama was in the same class selected for this game of death. He was the main antagonist.
Trivia: When James Brolin was offered the role of George Lutz, he was informed that they didn't have a script to give him. James bought a copy of the novel and began to read it. At two o'clock in the morning, while reading a very intense part of the book, a pair of pants that he had hung up earlier fell to the ground causing him to jump in fright. After that, James agreed to do the film.
Trivia: Michael Myers' mask is a Captain Kirk mask painted white with ruffled hair and a few other tweaks.
Trivia: When Hagrid is welcomed back to Hogwarts and everyone stands up and applauds, Vincent Crabbe also stands up and starts to applaud as well. This wasn't in the script and Tom Felton, staying in character, quickly grabbed Jamie and pulled him back down.
Trivia: When Donnie is about to enter the car with Gretchen near the end of the film, he clutches at his stomach as if in pain, and we see Frank touch his eye after Donnie dies. Both these moments foreshadow pain: a deleted scene of Donnie's death shows a pole impaling his stomach right where he clutched it. And Donnie shoots Frank in the eye.
Trivia: In the scene of Missy's funeral, Stephen King plays the priest.
Trivia: According to director James Wan on the director's cut DVD commentary, the major plot twist of the film, from Adam listening to Zep's tape to Jigsaw standing up, was one continuous shot, and was also the only shot they did of the sequence.
Trivia: When Joe Dirt finds out where he lives in Louisiana, there is a guy (Framer Fran) that speaks very strangely. He is played by Blake Clarke who played the same farmer character in The Waterboy.
Trivia: At one point, Heather Chandler asks Heather Duke, "Did you have a brain tumor for breakfast?" Ironically and tragically in real life, actress Kim Walker (Heather Chandler) died of a brain tumor in 2001.
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).