- Playing Against Type: Good-natured, avuncular Patrick Stewart plays the Big Bad.
- Real-Life Relative: The doctor, who lets Alice into the restricted area to see Jerry handcuffed to the bed, is Mel Gibson's younger brother Donal Gibson. He also comes in to help Jerry when he is having a heart attack.
- Throw It In!: According to Richard Donner, Mel Gibson improvised the opening scenes in which his character expounds his conspiracy theories to a succession of passengers.
- What Could Have Been:
Trivia / Conspiracy Theory