Flashdance

Okay - the dancing is done by someone else, the script has a bunch of flaws (dialogue being almost the worst), and the basic premise is absurd - an 18-yo dreaming of starting a career in ballet? (In ballet, you're just about approaching the peak of your career at 18.)

However, the movie has some heart-grabbing moments, the score is wonderful, the girls are pretty, and the moral of the story (keep on trying until you win) is as true as it ever was. This is probably the worst movie you'll ever have a wonderful time watching.

As a past professional dancer, I probably watch this movie about once a year. It's an essential part of any dancer's library, regardless of its flaws.