Grease

I got to thinking while puttering around the kitchen today: I've never liked the ending of Grease. Nice girl Sandy becomes the slutty bad girl to win her man. And Danny had already become less of a bad boy by lettering in track...he would've met her at least halfway on the goodie-goodie/rebel continuum. Sandy, you sold out!

It's a product of its time I guess. If made now, Sandy would've been geekier and stayed that way.