M*A*S*H (1970)

Revealing mistake: Near the end of the film, there is a football game played between the rival MASH units. Although the game is supposed to be taking place in a remote location of Korea in 1951, late model 1960's automobiles can be seen driving on a nearby highway as the game progresses. This gave away the fact that the football scenes were shot at a university in Southern California.

Hawkeye Pierce: It's a good thing you have a nice body, nurse, otherwise they'd get rid of you quick.

Trivia: Approximately half way through the movie, there's a shot of the moon with an announcement made over the system, as this was filmed on the exact same night that the first humans made their walk on the moon. From the audio commentary.