I wish the Dancing in the Dark video ended with Springsteen looking down in slow motion and witnessing in horror his period spread across those tight blue jeans, then everyone in the crowd (and Clarence Clemmons on sax) starts laughing at him yelling "Plug it up! Plug it up!".
EDIT: As for the tuxedo trying on scene, I love it. When I start wishing that they would all be nice to Carrie and that it end up a romantic comedy, that's the scene I look back to (and him at her screen door, asking her out) and think maybe it will happen. It's just another piece of very innocent and light humor that sort of settles you into a false sense of security. If it weren't for scenes like that, all the first two acts would consist of is you waiting for the awful thing to happen. By drawing you into the characters using kind of stock high school comedy situations ("You only got 10 dollars, you can rent a tux for ten dollars, no you don't HAVE to wear ruffles!") it's almost like a magician distracting you into believing the illusion that this is a high school movie like many you've seen before.
The sped-up chipmunk part of it, I have no idea what that's for.