Continuity mistake: Sheriff Buford T. Justice gets out of his car and leaves the door open. A few moments later, we see a different shot of the car with the door closed. Then a truck drives by and tears the car door off which is open again.
Continuity mistake: Richard Dreyfus comes home drunk after his horrible opening night. He stumbles around the living room knocking over furniture, including a table by the window with a typewriter on top. Next time you see the table, it is all together again.
Continuity mistake: There is a scene at an airport where Mel Brooks is approached by a man claiming to be a FBI agent or something like that. In the next shot inside the bathroom you can see the boom microphone from the top of the screen. (00:04:05)
Continuity mistake: A shot of the chiefs' bench shows Newman on the left and Ontkean on the right. Ontkean says "I can't believe my frigging eyes." Neither can I. The next 2 rapid camera cuts show Ontkean on Newman's left, then on Newman's right again.
Visible crew/equipment: When the Black Knight falls from his horse while attacking Dennis there is a lorry parked in the background. (01:33:05)
Other mistake: In the end credits, Christopher Walken's name is listed as 'Christopher Wlaken'.
Continuity mistake: During the car scene, when God makes it rain, Jerry's hair goes from being dry to wet, repeatedly, depending on the camera angle.
Factual error: In the scene where a politician is making a televised speech away from the studio, the camera is a vintage RCA black and white TK-12, but the camera monitors in the van are all in colour.
Continuity mistake: When Charlie fires Dick, there is a model rocket on the table which alternates between being upright and laying down.
Continuity mistake: When Manning first writes the word "assume" on the blackboard, it is written down towards the left center of the board. Then later in the scene, the word switches position to the upper left part of the board, then eventually back to the left center again.
Continuity mistake: When Evel Knievel goes to the insane asylum to break his buddy Will out of the institution, he crashes through the front door with the Stratocycle, breaking off the airplane-style wings on each side of the bike in the doorway. In the next shot, as he rides down the hall, the wings are still intact.
Continuity mistake: After Blackbird has been hit in the face by the custard pie, when she walks toward Tim the amount of pie on her face changes between shots.
Other mistake: When Mrs Slocombe is having her passport picture taken the images taken are not directly in front of them where the actual photo camera is, rather they are taken from the camera filming off to the side.
Continuity mistake: During the 'High Adventure' skit, the interviewer dies of a heart attack and is leaning back on the chair, in the next shot he is now leaning forward.
Plot hole: The whole premise of the movie hinges on the fact that someone is going to try to buy the ship off James Coco for 3 millions, to try and sell it for 5 to Morris, who put a false ad on the newspaper but he's gonna hightail after. First; it's unclear how whoever checks out of the ad with the 5 million offer is going to be aware that Joe Lo Monaco has a ship for sale for 3 mil; he did not put an ad out himself, and who checks out of the morning paper looking for multimillionaire bargains on ocean liners? It's something entirely out of their league for the gang of small crooks shown in the movie and that Charleston ends up helping. Even more absurd is the fact that Morris plans to disappear after the 'sting', but he is running it with his own real name and in London, where he works as a high profile lawyer. Not the kind of person who can and would just 'disappear' into thin air, especially when the sting could have been done in any other part of the world.
Continuity mistake: When Jodie Foster gets hit in the face with the tomato, she has a smear of tomato juice across one cheek. The very next shot shows the tomato juice all over her face. (00:55:32)
Continuity mistake: When Vivian crashes the VW bug into a tree in the park, it shows front hood damage on impact. Moments later, after some exposition, she backs out, and drives away with the hood intact.
Continuity mistake: When Raggedy Ann is helping get the captain out of his snow globe, we see that the ship is small. However, when he finally breaks free, the ship has grown bigger.