Continuity mistake: Right after Paul goes home with the doctor, the doctor and his wife are clearing the dinner table talking about Paul staying at the house. The wife turns to the dinner table and is holding 2 napkins. The camera angle changes and the wife is now seen walking 2 glasses over to the sink.
Continuity mistake: In the chase sequence where Paul Vitti and Dr. Ben Sobel are being chased in Sobel's Grand Cherokee, we see the car plow head-on through a bank's drive-thru ATM machine. Yet later on when we see a shot of the car's front grille again, and the car doesn't have any front end damage from the crash.