St. Elmo's Fire (1985) - 4 mistakes

Audio problem: When Wendy and Jules are talking in the bathroom, two women walk by and say "Hi Leslie" and "Hi Les, how ya doing?" to Leslie. It is easy to see that their mouths do not move in sync with the words that are heard.

Continuity: In the bar scene when Billy is playing the saxophone on stage, his wife enters the bar with her boyfriend. The saxophone music keeps playing after Billy starts glaring at them, even though Billy has stopped blowing air into the horn and is not pushing the horn's buttons.

Continuity: In the scene where Rob Lowe drives Demi Moore home in his jeep, Demi is wearing white, long earings. When she tuns to talk to Rob Lowe she has both on them on. When they cut to him and then go back to her she only has one on. Then, again they cut back to Rob Lowe and then back to Demi, she has both of them on again.

Continuity: The characters graduated from Georgetown University, but when Rob Lowe returns to his Fraternity house and plays football, they are actually on the campus of the University of Maryland. This is because Georgetown University wouldn't allow them to film on campus.