Braces in Film- High School Braces

Here's a fun short film which does a great job of describing what high school was like. And one of the characters has braces.

The guys braces might be a little bit exaggerated, but they do express what it is that makes braces kinda cool: the ajar mouthful of metal, the awkward grimace, the conspicuous speech impediment.    

Can you name the celebrities who wear or wore braces?