They're big in Superhero movies too.  In fact, "Superhero Movie " itself didn't have one... I don't know if it was intentional or not, but I noticed it missing when the hero fights the villain for the first time and gets his as s HANDED to him because he doesn't know how to fight.  If it was an intentional omission, it's a little brilliant.

How often is the love interest of the star player (it's always about the star player, isn't it?) one of the cheerleaders for his team, out of curiosity?