Kings of Leon are great...I'm actually really excited to get to see them. I've got their EP and their first album, and I've heard their new album online. A much different sound from U2--very Southern, whiskey-induced, barroom brawl kind of tunes--but I think they'll be great live. I'm actually surprised they aren't supporting the second leg, because they're really popular in Europe, where their second album has already been out for several months.