Continuity mistake: When the Batmobile is going to park (before the bomb scene) there is a sign saying "Mobey Dick Parking Only". When he is later carrying the bomb and passes by the Batmobile the sign is not there.
Revealing mistake: Near the end of the film when a building is collapsing and people are running to escape the falling debris, several women along with James Coburn are running up some stairs; a block of cement falls and hits actress Gina Golan right in the head. Instead of killing her on the spot, the bolder merely bounces off her head and she continues running up the stairs. (01:40:55)
Factual error: In the scene near the end of the film where Victor Buono is sitting in his chamber addressing his two captives, he opens a can labeled egg foo young with a can opener. He pours the liquid contents into a bowl. Egg foo young is an omelet and could not have passed through the small holes made with a can opener.
Continuity mistake: When Peter O'Toole is locked in the closet at the museum, he puts a rope through the keyhole and uses a hook to pull it under the door. In the first shot, from outside the closet, the end of the rope is to the right. In the next shot, from inside the closet, the end of the rope slides under the door to the left. (01:22:30)
Visible crew/equipment: When Norman is hit by the bundle of newspapers he is thrown in the air and you can see the wires lifting him.
Visible crew/equipment: In the scene where Sgt. Bung wakes up in the bath, he hits his head on the copper water boiler. However, you can see the white padding that will protect his head stuck underneath the bottom of the boiler. This is visible throughout the scene. (00:57:15 - 00:58:00)
Revealing mistake: All four of the Dachshunds in this story are supposed to be female. During one part of the picture, when they jump on the bed with Suzanne, you can see that at least one is male.
Factual error: Racer Dave Owens goes down to an unspecified Southern state to race and becomes a moonshine runner. However, the Dodge he drives in his illicit activities possesses California plates, as does the Plymouth driven by the IRS agents.
Factual error: When Mother Superior announces those girls who wish to stay and join the convent, she states they will join the Novitiate. Actually, not correct. Their 1st step is called Aspirancy / Pre-Candidacy Then Postulancy / Candidacy THEN they are a Novice, for a few years, before taking Final Vows to be a Full Nun.