Revealing mistake: When Dr. Marvin is choking on his food Bob gives him the Heimlich maneuver. He then puts Dr. Marvin on the couch and jumps down on him. Dr. Marvin expels the food just before Bob knees him the third time. This is best viewed in slow-motion. We are lead to believe that the third knee drop caused the food to be dislodged when actually the food is spit out just a split second prior to Bob landing the knee drop. (00:53:20)
What about Bob? (1991)
1 revealing mistake
Directed by: Frank Oz
Starring: Bill Murray, Richard Dreyfuss, Julie Hagerty, Charlie Korsmo
Genres: Comedy
Continuity mistake: In the scene where Dr. Marvin tells Bob to "take a vacation from his problems", there are white sailboats on the lake in back of Bob but when the scene shifts back to Dr. Marvin, the boats are gone, then they once again, magically reappear.
Dr. Leo Marvin: You understand, don't you? There's no other solution. You won't go away.
Bob Wiley: I will.
Dr. Leo Marvin: No, you won't. You're just saying you will! But then, after I don't kill you, you'll show up again. And you'll do something else to make everyone in my life think you are wonderful and I'm a schmuck. But I'm not a schmuck, Bob, and I'm not going to let you breeze into town and take my family away from me, just because you're crazy enough to be fun.
Trivia: Bill Murray and Richard Dreyfus did not like each other in real life, and were actually hostile to each other on several occasions during the shooting. This real-life hostility may have actually fed the on-screen chemistry of their characters.