Best sets, in no particular order
Bjork
Tiesto
RATM
Teddy Bears
Faithless
Placebo
Arctic Monkeys
Paul Van Dyke
I've seen Rage play tighter sets but none more powerful, the atmosphere was electric as well as the performance. Bjork was simply stunning, not everyone was into and I saw many people leave, but just more room for the rest of us.
Deathly hot, grossly over crowded on Sat/Sun, over all I'd say it exceeded what seems to be everyone's benchmark of 2004 (though I think 99 was the best). Really need to cap ticket sales at about 50K, or expand the area or double staff, concessions, rest rooms, etc everything was stressed near breaking point. There were a couple of the "Coachella moments" where the combination of the artist, the physical beauty and presence of the location, and the mood of those around you combine for something that only happens in Indio. Amongst them was Bjork's first encore, two songs into Faithless, the first chord of RATM, a few more that my fried brain can't articulate at the moment. 3 days is brutal but it should probably stay that way, but still WAY too many conflicts.