Continuity mistake: The yellow getaway car crashes on the waste land then rolls over. After it has come to rest, the mounds of earth used to roll the car have disappeared. Also, the car's windscreen disappears. Just before the crash, on an inside shot, it is there, but on the outside shots it has disappeared.
Continuity mistake: When the old car blows up both of the dead zombies are gone. (00:21:40)
Visible crew/equipment: Towards the end of the film when Billy runs at the top of the screen towards the exit of the jail, you can see the film crew at the bottom of the screen.
Visible crew/equipment: There's a scene in which someone goes into a phone booth to make a call. As the phone booth door closes you can see a reflection of the cameraman.
Visible crew/equipment: In the scene where Brody approaches the group of teenagers on their smashed boats, the angle cuts to show Brody approaching seen as if from Cable Junction. At this point, there is a huge mistake. The teenagers' boats are clearly visible in the foreground, the kids have all completely vanished, and you can spot the cameraman standing on the boats quite clearly.
Continuity mistake: In the scene where Bette Davis has lost her shawl there is a shot of her and Maggie Smith from far away. They talk about the time and in the background Angela Lansbury is drinking. She puts down her glass and leans her head on her hand. Then the shot changes to a close-up of Bette Davis and Maggie Smith and you can see Angela Lansbury in the background, with the glass in her hand, just about to take a drink. (00:55:05)
Factual error: The movie takes place in Chicago, except for one scene that is supposed to be in New York City (when Damien's uncle visits the priest). Two problems. First, as the cab pulls up to the church where the priest is, it goes past a housing project. Anyone who knows public housing construction in New York and Chicago knows that building is in Chicago. Second, when they go out to a trainyard, you can clearly see the Hancock Tower in the background. Of course, that building is in Chicago, not New York.
Continuity mistake: When Scarface is holding Gloria as he asks "Where is it?", watch her arms - from the side, we can see her left arm is arched outward; however, from the view behind Scarface and facing Gloria, her hands are pressed together in front of herself, in a defensive position. (00:38:55)
Visible crew/equipment: When Dr. Wheeler is leaving the Jefferson Institute after talking with the nurse, you can see someone reflected in the glass door holding a book or some papers.