My maybe-and-must list:

The Aggrolites
Menomena
Tiny Vipers
The Trucks
The Apples in stereo
Seaweed (Really just for the laugh factor)
Smoosh
Wu-Tang

Also, uh, Flatstock. Come by and say hello! I'm nice! Really!

(sorry if this is a double post; I slipped some accidental HTML in the original)