Other mistake: When Tyrone gets into the car, he accidentally bumps heads with Vincent, who is sitting in the back seat. Robbie Gee's look of surprise is undoubtedly genuine.
Suggested correction: While I agree that this was likely unscripted, if we are just looking within the world of the movie, Tyrone just accidentally bumps Vincent, and Vincent reacts like most people would.
Continuity mistake: When Brick top first visits Sol and Vinny, Brick top's henchmen are lining the outer office with plastic sheeting, and laying out their fat accomplice, yet nobody inside hears this.
Suggested correction: They are listening to Bricktop and there is a smaller room in between with both doors shut.
Other mistake: Why does Boris remove and carefully wrap Franky's arm after he's cut it off? It would have been easier to cut at the wrist, therefore removing the need to take a bloody and very odd shaped parcel with you.
Suggested correction: It's a pretty good point you bring up, and as many times as I've seen the movie, I never thought of that. And apparently, neither did Boris. This was a character decision, and one that falls right in line with his flair for the dramatic. We later see him casually walk out of his house with a huge gun and proceeded to walk down the street. I'm sure an arm attached to a briefcase was of no concern to him.