Headliners include Red Hot Chili Peppers, Jack White, Black Sabbath (lolwut), and The Black Keys. There are quite a few of the "minor"/non-headliner acts I'm very interested in seeing; Justice, Franz Ferdinand, The Temper Trap, Of Monsters and Men, Band of Skulls, Little Dragon and SBTRKT, Wale, and maybe Florence + the Machine (and quite a few more). I saw RHCP back in '06 so I'd maybe see them again but with John Frusciante gone I don't know if they're the "same band".
Anywho, what's everyone's thoughts on music festivals? Anybody plan on going to Lollapalooza, ever attended, attended and hated it and will never do it again?!?