Hmmm. Built To Spill, Neutral Milk Hotel, Animal Collective, Buckethead, Lightning Dust, Health, Levy, Regina Spektor, Bjork, Laura Veirs, Bat For Lashes, Emily Haines, Emily Haines and the Soft Skeleton, Crystal Castles, Metronomy, Laura Marling.
That's all I can think of off the top of my head. Not all of those artists are indie, but they're still interesting.