Trivia: In the scene of Missy's funeral, Stephen King plays the priest.
Trivia: To help promote the movie "Jason Takes Manhattan", Kane Hodder appeared on The Arsenio Hall Show as Jason. He remained in character the whole time and never spoke.
Trivia: In the dream sequence of the asylum where Amanda Krueger is trapped by the hundred maniacs one of the maniacs looks remarkably like Freddy. Presumably this was his biological father. (Of course this man was played by Robert Englund, the actor who plays Freddy)
Trivia: In one version of the script, Martin finds another videotape of his father Seth. This tape would show Seth (who is in his part-fly form) explaining the "cure". This scene would have required Jeff Goldblum to be in make-up for five hours, and he didn't want to go through that, so he dropped out, and the scene was cut from the script.
Trivia: During one take of a fight scene between Dr. Sam Loomis and Michael Myers, Donald Pleasance accidentally broke Don Shanks' nose.
Trivia: The film is also widely known as "The McPherson Tape." However, this was never the official title, and is seemingly based on a misconception since the film was often circulated without the title attached in the 90s. Regardless, this incorrect title became so well-known that the film's 2020 Blu-Ray by American Genre Film Archive (AGFA) contains a double-sided cover... one with the correct title "U.F.O. Abduction," and the other with the misnomer title "The McPherson Tape."
Trivia: Wes Craven originally intended for "Shocker" to become a franchise, with Horace Pinker becoming the next big slasher-star. However, the studio wasn't happy with the film's mediocre box office returns, and a sequel was never made.