Continuity: 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. (Time)

Revealing: In the middle of the movie, Roy is flossing his teeth by himself. In the mirror as well as when he turns around, you can see his hand holding the hook, if you look closely. (Time)

Factual error: During the movie, which is based in '79, Roy has a Rhino bowling ball. Rhinos weren't made until '91.

Revealing: Just when Ernie Mcracken wins the $1,000,000 and everybody crowds round to talk to him, you can clearly see Roy's hand popping out (and I think that the hook is hidden in the towel he has). (Time)

Revealing: Munsen's nose starts bleeding BEFORE Claudia hits him. (Time)

Revealing: You can clearly see a stick being used to ensure a strike after Roy tells Ishmael to step 2 boards to the right. (Time)

Continuity: 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. (Time)

Factual error: The US postal logo shown on the postbox was not used until after 1979.

Continuity: 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: When Roy starts his first roll in the finals, he bowls on the 4th lane from the right, and pins are also set up in the adjacent 3rd lane. As he finishes, he is now on the 3rd lane and the pins in the 4th lane have disappeared. Watch the logo on the wall above the pins to keep track of the lanes.

Continuity: The handles move on the foosball table during the scene at Stanley's house, even though nobody was near the game.

Continuity: 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. (Time)

Continuity: 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: 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. (Time)

Continuity: 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: 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.

Visible crew/equipment: In the scene where Munson is lying in bed and his hook is in the radio if you look closely you can see that his whole hand is in the radio and the hook on top of his wrist.

Continuity: 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. (Time)

Factual error: In the scene that takes place in 1969, the car in the garage next door is a 1973 Buick.

Continuity: Roy puts down his sun visor in the car but it is up again in the next camera view.