Escape from the Planet of the Apes (1971)

Plot hole: While it is essential to the story, there is a problem with apes in the space ship. While it is the one that took Taylor to the future, there is no way the chimps could have salvaged the ship from the water (plus there wasn't enough time for such a salvage operation. Kira and Cornelius were living in the ape city we see in "Beneath the Planet of the Apes" never mentioning to Brent that they found a spaceship he could travel back with). They didn't have the technology for such an operation, no diving suits, and chimps are scared of water. Also, the water would have destroyed the power systems of the ship when it sank. (00:00:25)

Movie Nut

Revealing mistake: Throughout the film, when the camera goes close to Zira, you can see the line where her wig is glued on.

Continuity mistake: When the scientists are using the blocks on Zira, Zira is told to point to the blue blocks. As she points, the blue block is at the front of the pile from the scientist's perspective. In the next shot, the blue block is suddenly in the middle of pile. (00:13:30)

Casual Person

Tailor: May I measure your inside leg, sir?
Cornelius: No.

Armando: If it is man's destiny one day to be dominated, then oh please, God let him be dominated by such as you.

Cornelius: I do know this: One of the reasons for man's original downfall was your peculiar habit of murdering one another. Man destroys man. Apes do not destroy apes.