Movies I've Seen Only Parts Of: Grease (1978)

Olivia Newton-John and John Travolta had a summer fling but now it's over because they're from different worlds. The boys and the girls discuss this separately but simultaneously. Then there's a car race, and she sluts up and wins his heart at an amusement park. Oh, and for the sake of completeness I should note that I know that it's of course a musical.

I think I like her nice-girl incarnation better. This one looks like Traci Lords in Cry-Baby.