Revealing: When the bad guys are shooting at Ace, he catches a bullet in his teeth. However, he goes from his lips being tightly shut to suddenly having the bullet in his teeth, obviously hiding the bullet in his mouth.

Other: When Woodstock says he is sending new coordinates to the Norwegian whaling fleet, the blips on the radar screen move even when the beam is not sweeping over them. The screen also makes it look as though Woodstock's radar (and the whole nightclub?) is smack in the middle of the fleet.

Other: If Lois Einhorn is Ray Finkle, then how come Finkle has bigger fingers at the beginning, when Snowflake is being abducted, than he does in the end?

Factual error: The band Cannibal Corpse is falsely credited as "Cannibal Corpses" in the end credits.

Continuity: When we first see Finkle's room, it's an inside shot and it's completely dark. But when we see the rest of the room, there is a "shrine" to Marino, with candles already lit.

Continuity: When the people take the dolphin and put it in the truck near the beginning, they close the truck door and the door is red. When it shows the truck driving away, the door is white.

Plot hole: When Ace is in the boat dock he and Einhorn fight. He grabs her hair and hits her head on a pole. Later, when he is revealing her true identity he tries to pull off her wig. He would have known it wasn't a wig from the fight.

Factual error: The movie that Ace plays back when he goes to Finkel's house mentions that it is Superbowl 17. Only problem was the entire film references to Super bowl 19 between the Dolphins vs 49ers. Superbowl 17 was Dolphins vs Washington. Added to this the Dolphins lost by much more than just a fieldgoal in both games.

Deliberate "mistake": When Ace is delivering the package at the beginning of the movie, he lets the elevator doors close on it. However, all elevator doors are equipped with sensors so that they won't close on things. The package would have been big enough to keep the doors open.

Other: When Ace goes into the death metal club two people stop moshing and very obviously look at the camera smiling straight at it.