Neo classical: Michael Nyman, Yann Tiersen, Ludo Einaudi, etc.
Also some pseudo-intellectual hipster garbage a la Andrew Bird, Final Fantasy, etc.
Oh, and the classics - Bob Dylan, Neil Young, The Beatles.
A bit of twee Belle & Sebastian and Beirut (even though Beirut aren't technically twee.)
Some alternative hip-hop - Bleubird, Cage, etc.
Oh, and I have many guilty pleasures, including, Dragonforce, Kiss, and shitloads of chiptunes.