Visible crew/equipment: When Comicus and his entourage are on the road to Judea, the tire tracks of the vehicle carrying the camera are blatantly clear in the lower part of the picture.
History of the World: Part I (1981)
1 visible crew/equipment mistake - chronological order
Directed by: Mel Brooks
Starring: Dom DeLuise, Mel Brooks, Madeline Kahn, Gregory Hines, Harvey Korman
Revealing mistake: During the Inquisition song when Right Before Mel Brooks Plays bongos on the guys heads he slides in from behind the wooden torture things. If you look closely the hair on the stunt double sliding in is darker than Mel's.
Dole Office Clerk: Occupation?
Gladiator - The Roman Empire: Gladiator.
Dole Office Clerk: Did you kill last week?
Gladiator - The Roman Empire: No.
Dole Office Clerk: Did you try to kill last week?
Gladiator - The Roman Empire: Yeah.
Dole Office Clerk: Now, listen, this is your last week of unemployment insurance. Either you kill somebody next week or we're going to have to change your status, got it?
Trivia: During the Roman Empire, the woman says walk this way, and they walk like she did. This joke was featured in Young Frankenstein, as well.