These aren't necessarily in order:
Arcade Fire 05 (and again in 07)
Roger Waters 08
Flaming Lips 04
Paul McCartney 09
Theivery Corperation 09
The Cure 04
Daft Punk 06 and Bjork 07 would have surely made the cut had I not sucked at life and missed them. Daft Punk I was just too late getting to the tent so I skipped it (lame) and I got extremely ill before Bjork's set and spend most of it passed out in first aid (even more lame).