Which bands at Bonnaroo 2011 are worth seeing?

I'm going. I can't wait, I am beyond stoked. But, besides the obvious (Widespread Panic, My Morning Jacket, Buffalo Springfield, Gregg Allman) what bands are worth seeing? Some of them I've never heard of, and I want to experience new, great music... So please give me your opinions of the lesser known bands!! I want a game plan ready before I head up there!