rock:
matt pond PA (deserves another mention here)
matthew sweet
matt marque
the libertines
echobelly
gary jules (gaining popularity but still a rad singer-songwriter)
the breakup society
rooney (getting popular, but whatev, they remind me of the beach boys)
zero 7
belle & sebastian
the new pornographers
jesus and mary chain
the twilight babies
le concorde
fountains of wayne (sure they had the breakout hit "stacy's mom" but real fans know their older stuff )
ozma (weezer-like nerd rock)
the shins
modest mouse
dan bern
nick cave and the bad seeRAB
electronic / experimental:
the art of noise
deepsky
hip hop:
dead prez (older stuff)
talib kweli / mos def / blackstar
del tha funkee homosapien
oldominion
soul position
Aesop Rock