I first saw this film at a Methodist Youth Camp in 1983 -- this poor nerdy kid adores the head cheerleader and tries everything he can to get her to notice him.
It's a great film about friendship and relationships. One part that made me laugh the hardest was when the nerdy kid's brother (or sister, it's hard to tell because the sibling isn't more than 6 or so, and his/her hair looks like a fright wig!) is listening in on the nerdy kid's phone conversation with the cheerleader, and when it comes time for the nerd to say why he really called, the sibling says, "To take you out, my DAHHHHH-ling!"
If you can find this film, you've got to see it (or rent it, or even buy it -- it'd be great if they ever released it on DVD!) -- and if you do find it, PLEASE put the name of the place where you found it here onto the IMDb!