The Republican candidates need to get on the ball with this kind of thing. If Hillary can do funny, anyone can do funny. This stuff isn't laugh-out-loud, but it's a little envelope-pushing and fun. The only thing I think I've seen on the right that comes close was Fred Thompson's response to Michael Moore (pre-candidacy).
I think at least Fred and Rudy are capable of turning some of this lighter stuff out and doing a good job with it, and some of the lower-tier candidates don't have much to lose by giving it a try. We've got plenty of smart, gifted ad guys on our side who I'd imagine are capable of thinking in slightly new terms. It's a great opportunity to humanize campaigns, make the candidates into real people, and get a lot of buzz doing it. Like it or not, silly Internet video moves messages.
It's the bright side of YouTube. A viral Macaca moment is always a danger, but Internet video also gives candidates a chance to have some fun with viral videos for which they call the shots.