Can't Buy Me Love (1987)

The Girl: Cindy Mancini (Amanda Peterson)
 
The Geek: Ronald Miller (Patrick Dempsey)
 
The Technique: Miller takes an odd path to love - he helps cheerleader Cindy out at first and she reluctantly agrees to help him be cool for a month.

As he hangs with the jocks and loses sight of his real friends among the nerds, he grows closer to Cindy, but at what cost?

In the end, he learns to be himself again (yawn) and Cindy discovers she loves him for it (double yawn).

Of course, it doesn't hurt if you're simply acting like a nerd and grow up to look like Patrick "McDreamy" Dempsey, either. Can't help you with that, though...

Next: Transformers