Continuity mistake: In the scene when Munson has just had sex with his landlady, he is in the bathroom throwing up. The landlady throws his magazine at him and it lands directly on the side of the toilet. When Munson picks it up, it is directly under him.
Factual error: During the video montage after Roy, Claudia and Ishmael decide to go to Reno, Ish is seen sitting up in the back of the convertible. There should be a lot of wind but Ishmael's hair doesn't really move and he is even able to light his "smoking device" despite being in the open air. Toward the beginning of the scene Claudia and Ish are dancing in the back of the car and Claudia's hair is being blown around.
Continuity mistake: At the petrol station, the oil on Roy's mouth keeps changing position.
Continuity mistake: When Roy Munson punches Ishmael in the face to keep the truckers from beating him up, he uses his right fake hand. How can he do this when he can't make a fist with it?
Continuity mistake: Roy puts down his sun visor in the car but it is up again in the next camera view.
Factual error: In front of Woody's apartment, (supposed to be in Scranton, eastern Pennsylvania) you see a telephone pole with a PAT bus sign. Pat is the Pittsburgh system, in western Pennsylvania.
Factual error: The ball return the hustlers put Woody's hand in would NOT cut off or chew up his hand, maybe peel off a little skin....
Continuity mistake: At the end when Big Ern is taunting Roy, he starts shaking his arms when "Showdown" starts. He is standing up in the shot before. In the next shot he starts standing up and repeats the action.
Continuity mistake: When Roy is bowling against the Priest in the upstairs bowling alley, during the first scene we get a view of an 8 lane alley. In subsequent scenes there are 10 or more lanes.
Continuity mistake: During the ending concert with Blues Traveler, watch the shadows and the sky, it goes from later in the afternoon to around noon and back and forth several times.
Visible crew/equipment: Right after Big Ern wins the tournament, he is rolling on the floor. Watch the left side of the floor near him, you can see a boom mic shadow.
Continuity mistake: When Munson is bowling at the beginning of the film he does the "splits" and the ball is spinning in 1 spot then the ball starts to roll again, in the next scene the ball is traveling at a higher speed than the scene before.