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 - chronological order
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.
Trivia: Julie Hagerty plays Kathryn Erbe's mother in the film, even though in real life she's only 10 years older than Erbe.