Continuity mistake: Dan's business partner reintroduces, for the first time, his secretary. He then has to leave and pats Dan on his way out. This is a rather bad transition between shots because it's rather obvious Jeb's hand is on Dan's arm in the first shot and on his shoulder in the next. (00:22:55)
Continuity mistake: At the end of the movie, the villain's car flies off a cliff and explodes, rolling belly up completely. A minute later, the helicopter flies by for the end credits, and the car is now flipped almost 180°, just tilted to the side. (01:31:20)
Factual error: A little spoiler about the ending: Bob Hoskins' character saves his life by breathing underwater because he "has his own tank," namely his asthma inhaler. That's not how inhalers work. They are not little scuba diving tanks full of oxygen; they are full of the drug they need to puff into your respiratory system.
Plot hole: Spoiler Warning. It turns out that Dan Merrick is actually Jack Stanton after a whole lot of reconstructive surgery to make him look like Dan Merrick. Everything is believable except that he has Dan Merrick's voice as well. He should have Jack Stanton's voice.
