Continuity mistake: On the long shot of Roy's first strike in 1979, the 7 pin is standing. In the closeup, the 7 pin is gone before the ball hits. (00:03:00)
Continuity mistake: When they're driving along after the fight in the diner, the scenery in the background is different in the shots of just Roy to the shots of all three. (00:55:00)
Continuity mistake: Ishmael (Randy Quaid) clearly has a tattoo of a four leaf clover on his chest when he is rescued from the strip club, well before they even make it to Reno, where he allegedly gets the tattoo. (01:08:20)
Continuity mistake: At the tournament, there is a quick shot of Ishmael sitting beside Roy while Big Ern is bowling, long after Ishmael's brother took him home. (01:40:00)
Continuity mistake: When Bill Murrary is bowling his last frame in the finals there is a man 4 rows up standing right next to the ESPN booth on the left side of the screen. In one shot he has a brown jacket on but in another the jacket is gone and then back on again. (01:40:50)
Continuity mistake: The handles move on the foosball table during the scene at Stanley's house, even though nobody was near the game.
Continuity mistake: When Munson is on the bridge right before he backs up to tell Ishmale he passed the test, he has a vision in his mirror of his nasty landlord. When the vision ends he folds his mirror up, but the next shot when he's backing up, the mirror is back to it's original position.
Continuity mistake: The napkin in Ishmael's collar gets bunched up when he punches Ernie, then immediately reverts to how it had been before the altercation.
Continuity mistake: In the final match between Roy and Big Ern, Big Ern throws his second ball in the tenth frame and has removed his silver neck scarf thing, but when he turns towards the crowd, the camera angle that shows the back of Big Ern shows the scarf around his neck once again.
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.
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.
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.
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.
