Factual error: While Bridger is watching the film of the Mafia boss following Beckerman he signals for the film to be stopped so he can look at the close up shot of the man. He is watching a 16mm film shown through a bog standard projector - stop a film like that for more than two seconds without closing down the projector shutter (this doesn't happen - if it did the screen would darken instantly) and it will melt and catch fire. This doesn't happen.
Continuity mistake: In the early part when Peter Fonda and Dennis Hopper are getting their choppers ready, the film clip was reversed. You can tell because the American flag on Fonda's jacket has the stars on the right shoulder, not the left like the rest of the movie. (00:06:10)
Factual error: Near the end of the film Butch is complaining about the living conditions they have to endure - jungles, swamps, snakes, night work - and Sundance sarcastically retorts "Bitch, bitch, bitch!" In 1908 the term meant just what it literally means: "Female dog." It did not adopt its current meaning of "complain" until much later. At the time the film is set - outside the context of "female dog" - it was considered to be a serious obscenity, and it would not have been used to describe something as ordinary as someone moaning about his living conditions.
Visible crew/equipment: In several scenes there are rectangular arrays of studio lamps visible, reflected in the actors' space helmets.
Visible crew/equipment: When Woody Allen cuts out a piece of glass out of a shop window, the camera, dolly, some crew members and a crowd of spectators can be seen reflected in the glass.
Factual error: The Saint picks up a newspaper, and reads an article that is, according to the headline, about the murder of the Englishman he met the previous night. However, if you actually translate the Italian in the body of the article, it is talking about an industrial fire on a ship.
Continuity mistake: At the porcelain store, after Tina drops the figure the position of the head of the man behind changes back and forth between close and wide shots.
Continuity mistake: When he is blackmailed in the car at knife-point, in one shot, the steering wheel is a white Mercedes steering wheel with logo. In all the rest of the scenes it is a black American car steering wheel. (00:05:02)