Trivia: When Skroob's ship arrives at Planet Druidia, Colonel Sandurz says the ship is preparing for metamorphosis to which Lord Helmet says "Ready, Kafka?" Franz Kafka wrote the book "The Metamorphosis."
Trivia: This movie was originally supposed to be part of the TV series "Amazing Stories" but Steven Spielberg like the story so much that he decided to make it a full length film.
Trivia: Kevin Peter Hall, who plays the Predator, also appears as the pilot of the general's helicopter at the end of the film.
Trivia: During the making of this movie Christopher Reeve and Sidney J. Furie didn't get along at all and often clashed with each other.
Trivia: Originally, this was going to be a horror movie and John Buechler was up for directing it. The movie would have had toxic sludge somehow finding it's way into a garbage can filled with broken dolls that would bring them to life and make them serial killers.
Trivia: The filmmakers used two different shopping malls for the scene where the doctor injects Tuck into Jack's rear. The opening scenes where the doctor runs in and heads for the elevator were shot in the Northridge Mall in the San Fernando Valley in Los Angeles. The scene where he reaches the top and rams the syringe into Jack was filmed on the top floor of the Sherman Oaks Galleria, another mall several miles away.
