Whose AMA Performance Are You Most Excited to Watch?

The 2009 American Music Awards are tonight, and it looks like the show is going to be bigger than ever. We're going to be bringing you live updates from the red carpet and press room, but on stage there are going to be some amazing performances. Most of you weren't all that into Jennifer Lopez's latest track, but she always puts on a show. Out of these acts, which are you most excited to watch tonight?