Continuity mistake: Towards the end of the movie Dave takes Walley's jacket and uses it to help them slide down a cable. Before they slid down, Dave tells Walley to hold on, and Walley asks if they're going to be above the ground. Dave tells him no, and off they go. However, Dave is deaf, and reads lips, and Walley is standing behind him when he asks the question. So how did Dave read his lips if he wasn't looking at him?
Continuity mistake: Wally and Dave exit the swamp after pushing the police car in. Look at Wally's legs; you can see a pair of Wellington boots underneath his trousers.
Other mistake: In the alley scene immediately following the jail escape Dave and Wally are trying to open a door, Dave steps away from Wally and while looking away says "There's an alley!" Wally hollers out "Dave!" and Dave whips back around and says "I'm right here, I'm right here!" He wouldn't have been able to have heard his name being shouted since he is deaf. (00:39:00)
Continuity mistake: There is a scene with Richard Pryor crouched in a corner being shot at by bad guys. A statue behind him is hit and shattered. In the next shot, it's standing there like nothing ever happened.
Revealing mistake: When Dave and Walley are running with a car, Walley says that he heard some shots. Dave replies that he didn't hear anything, but as you know Dave is deaf, and he reads Walley's lips each time he speaks. In this scene, he wasn't looking at him, but answered. (00:47:45)
Revealing mistake: When Wally and Dave are crawling through a broken door, you can see baseball catchers pads on Gene Wilder's legs as he crawls through the hole.
Continuity mistake: When Wally is whistling to lure the dogs away from the greenhouse, Kevin Spacey steps on his fingers to stop him. In that shot, you see that Spacey has the gun by his side. But in the next shot when you see his face, he's already got the gun raised.
Other mistake: In the film, each of the cop cars have a unique number associated with their plate number. Dave and Wally steal car "2286." Braddock and the other officer get into car "5210." After everyone was shooting at Dave and Wally, they're seen driving off while Braddock, Eve, and Kirgo are all bunched up together at the intersection. You can see Braddock's car number is now "2286."
Revealing mistake: When in the squad car, as they almost hit a couple of guys carrying a wooden bookcase, you can see the wig on the guy in the squad car is much bigger than Gene Wilder's hair.
Revealing mistake: During the car chase you can see it's Gene Wilder and Richard Pryor's stunt doubles in the car.
Continuity mistake: After escaping from the police station, they go into a building and break a wooden door to come out of the other side. When they first break the door, the broken section is only inches away from Richard Pryor. Gene Wilder says to watch out for it. When Richard Pryor moves it, it's slightly further away than it was before.
Revealing mistake: When Dave falls from the ladder, you can see it is not Gene Wilder but his stunt double.
Revealing mistake: Dave and Wally are checking into a hotel. Dave is looking down and signing in on the paper while the clerk says to them, "we have a room with 2 queens." Dave (still looking down, never at her lips) looks up and says "Well get them fellas out of there." Dave is deaf and would not have made that comment, seeing that he never looked at her so couldn't know what she said.
Continuity mistake: When Dave falls from the hood of the car, the stuntman lands in a completely different position to that of Gene Wilder one shot later. (01:00:05)
Continuity mistake: When Richard Pryor and Gene Wilder are sitting on the park bench, the level and configuration of ice cream in the cones they're eating changes noticeably from shot to shot. (00:14:00)
