Revealing mistake: When the earthquake hits, shelves, pots, etc., in the humans' house do not move or shake, except for one bowl of fruit in the foreground that falls off a table.
Planet of the Apes (1974)
1 mistake in The Trap
Starring: Roddy McDowall, James Naughton, Mark Lenard, Ron Harper
Urko: These humans are dangerous, don't you understand that? They think that they're as good as we are.
Trivia: The Planet of the Apes TV series was filming in the same California hills the same time as M*A*S*H. Both shows were merely one hill away and over from the other.