Corrected entry: In the saloon, Howard Johnson is talking about penicillin working on anthrax. Blazing Saddles was set in 1874, but anthrax wasn't discovered until 1875.
Corrected entry: The "welcome sheriff" banner rolls up after the realization of the new sheriff's race. Though meant as a sight gag, you can tell the man in the tan suit closest right behind the woman in the blue shawl pulled the banner to make it roll up, though he tried to do it in a sneaky way.
Corrected entry: In the Governor's office, the US flag is a modern flag with all 50 stars. There wouldn't have been nearly as many during the time the film took place.
Correction: It's definitely not a 50-Star flag. The stars on the flag seen in the governor's office are in a row, not offsetting rows. Plus the stars seen are close to each other. On the 50-Star flag the stars have more room between them to allow room for the point of the star in the next row.
Corrected entry: As the announcements are made, a bundle of dynamite is thrown through the window. The fuse is half way burned when the man says "and duck!" When he ducks, the explosion occurs, but the fuse couldn't have burned that fast.
Correction: Given this film's parodic and absurdist nature, this very likely was intentional.
Corrected entry: In the recruiting scene, the outlaw in the aviator's goggles and jacket is none other than Mel Brooks. He would go on to wear the same outfit in his next film, Silent Movie. (01:10:15)
Correction: Actually, the Aviator jacket and goggles were worn by Marty Feldman, complete with a long white muffler.
Corrected entry: When the Waco Kid supposedly steals the king from the sheriff as they are playing chess, the real king falls out of the sheriff's hand as he pretends to grab it. It still lies there throughout the rest of the scene.
Correction: It's not the king lying on the chess board. Bart knocks over a pawn.
Correction: The king didn't fall, he knocked a different piece over.
Other mistake: When the Western fight breaks into the dance movie set, the background of the Western movie is seen, even though it was all several hundred feet away, on an outdoor set.
Suggested correction: This is entirely in keeping with the "reveal of the movie within a movie.
Of that, there's no question. I was pointing out that the sets for both movies were a distance apart...the Western backdrop should not have been seen.
Continuity mistake: When Waco Kid is lying down on hay bales at the end of the film, there is no horse. All of a sudden when he's invited somewhere by Sheriff Bart, a horse appears. (01:33:50)
Suggested correction: It is true that the horse suddenly appears, but Jim is reclined on hay bales, not boxes.
For future reference, this is what the "change the entry's wording" option is for.
This entry is about the sudden appearance of a horse. It has nothing to do with The Waco Kid reclining on boxes nor does the entry say he was reclining on boxes. It says that he's reclining on bales of hay.
It did say bales of hay - I've left the correction and "change wording" comment online for a bit for informational purposes.
Continuity mistake: When Sheriff Bart and The Waco Kid are sitting in the sheriff's office, the Waco Kid is shaving. He has shaving cream on his face, he wipes some if it off, leaving some on. Bart kicks a chair and the Waco Kid jumps up and the shaving cream is gone.
Correction: Anthrax has been known about for a long time. The word was first used in the 1300's. In 1875, it was only the bacterium which caused anthrax that was discovered. Prior to 1875 anthrax was a disease with an unknown pathology. Howard Johnson doesn't mention penicillin though. He mentions Louis Pasteur's vaccine.
Bishop73