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: When the taxi Jessica and Eddie are in hits the lamppost, she spins around and her dress shifts position. For a couple of frames on the laserdisc version her underwear vanishes, or at least it appears to. Opinion is divided as to whether it's a deliberate move by the animators or just an error in colouring. (https://www.snopes.com/fact-check/who-stripped-jessica-rabbit/). (00:18:15)
Trivia: Check out the nurse that wakes Kristen up at the school infirmary. It is Robert Englund, out of his Freddy make-up. After Kristen wakes up, it is a different person.
Trivia: At the end of the movie, the Carol-Anne that Pat is holding is really a double, because Heather O'Rourke died from intestinal stenosis, shortly before the movie was finished.
Trivia: The film's original title was "Red Rain" and the Peter Gabriel song of the same name was meant to be featured in the film. However, they couldn't get the rights to feature the song, so the song "Red Harvest" was commissioned and written specifically for the film. Shortly before the film's release, the studio decided that the title "Red Rain" no longer made any sense without the Gabriel song in the movie, and instead retitled the film "Jack's Back."
Trivia: The taxi driver who hands over the matches to Harrison Ford is the film's director, Roman Polanski.