Okay, sure, Dean's Iowa speech was rather comical. But are people seriously going to change their vote because the guy looks geeky on TV once in a while? That clip tells us nothing whatsoever about his ability to serve.
Besides, Dean is just like any other emcee, his only problem is he needs the right beat behind him. That speech is already spawning more remixes than Jay-Z's Black Album, but I think this one gets it just right: