Continuity mistake: When Diane is driving the station wagon with her father at the start and later after her father's physical exam, in the exterior shots facing the two of them the rear-view mirror vanishes.
Ghost Dad (1990)
1 continuity mistake - chronological order
Directed by: Sidney Poitier
Starring: Bill Cosby, Ian Bannen, Denise Nicholas, Kimberly Russell
Factual error: When Bill Cosby (as a ghost) goes to the doctor and the doctor checks his heart (which is not beating), Bill Cosby then presses play on a tape recording of a sound of a beating heart. The doctor hears this through the stethoscope, even though the tape recorder is behind Bill's back, which is not possible.
Elliot Hopper: Cancel the 5.
Carol: Oh, no! You can't cancel the 5.
Elliot Hopper: Then put the 5 at 4, and then cancel at 4.
Trivia: Pamela Poitier, who plays the role of Nurse Satler, is the daughter of the film's director, Sidney Poitier.