Headlining: The Stone Roses, Blur, Phoenix, and the Red Hot Chili Peppers.
Other key acts - Wu-Tang Clan, Jurassic 5 (!), How to Destroy Angels, Johnny Marr, New Order, The Postal Service (!), Grizzly Bear, Band of Horses, Vampire Weekend, Social Distortion, and Descendents.
But there's a hell of a lot more - check the full lineup above.
Hit the Coachella site for more details.