That's an awesome picture. I missed them for Battles last year but really no one can replicate their antics. I'll put my vote down for Ghostland Observatory to be insane this year though. Check out some of their videos.
That which comes closest to expressing the inexpressible is music - Aldous Huxley
Well if you are just looking for a band thats going to put on a show, and the lead singer is going to go apeshit, then I would look to Ghostland. Most of the bands this year are pretty low-key (not to say they aren't good, many of them are great, just not a lot of flaming lips esque showmanship). I saw Ghostland at the Vegoose fest and the lead singer is pretty crazy and knows how to put on a show.
Franz Ferdinand, while pseudo-mainstream which means many of you hate them, have the potential to go over the top and put on a badass show. Silversun Pickups & Yeah Yeah Yeahs also have some badass potential.
Beirut will be the most beautiful show, and will be the one to take your breath away the most. But Zach is pretty straight forward on stage.