History of the World: Part I (1981)

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.

Nicki

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.

Revealing mistake: When Comicus et al are running from the Roman soldiers, Miriam pulls Comicus through a secret marble door. When it closes, you can see the glue residue revealing that it's Formica.

Nicki

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.

Trivia: The Viking funeral gag was a Jewish in-joke, based on the libelous old myth that Jews had horns. (Making light of anti-Semitism has long been one of Mel Brooks' trademarks.)

Trivia: Gregory Hines was cast as a last-minute replacement for then controversial comedian Richard Pryor, who had severely burned himself while freebasing cocaine.

Empress Nympho: Bob?
Bob: Yes, Your Highness?
Empress Nympho: Oh, Bob, do I have any openings that this man might fit?
Crowd: Whooooaaaaaaa.
Bob: Well, we could use another wine steward.
Josephus: I got a great corkscrew.
Crowd: Whoooaaaaaaa.
Josephus: Damn, this a hip crowd.

Count De Monet: Your Majesty, you look like the piss boy.
King Louis XVI: And you look like a bucket of shit.

God: Moses, this is the lord thy god, commanding you to obey my law. Do you hear me?
Moses: Yes. I hear you, I hear you. A deaf man could hear you.
God: What?
Moses: Nothing. Forget it.