Trivia: When Kevin arrives at New York Airport, the woman at the counter who tells him which city he's in is Ally Sheedy. This film was written and produced by John Hughes, who also directed her in the 1985 film "The Breakfast Club."
Trivia: Because Robin Williams ad-libbed or improvised so many of his lines, the film was ruled ineligible for the Adapted Screenplay category at the Academy Awards.
Trivia: Reportedly, Disney chairman Jeffrey Katzenberg repeatedly tried to sabotage the film's production as he was worried it would overshadow their film "Aladdin," especially as both films featured Robin Williams as a prominent character. Williams was furious, as he felt the film's environmental message was important and that there was no reason he couldn't do both films. It's believed this may have been a factor in William's feud with Disney that lasted several years after "Aladdin" was released.
Trivia: Shannon and Joseph's mean boss at the chicken plant is played by director Ron Howard's brother, Clint.
Trivia: The Ark of the Covenant from Raiders of the Lost Ark (1981) can be seen in the same warehouse where the shrinking machine is being stored.
Trivia: The jacket that Robert Redford wears for most of the film is the exact same jacket he wears in "The Natural" - he got to keep it after filming had finished, and wore it for this film as well.
