Most of mine are pretty mainstream, but I'm quite a fan of Reverend and the Makers, Modest Mouse, Animal Collective now, and Iron & Wine. The latter three are thanks to Questionable Content, though admittedly I also enjoyed Iron & Wine's song 'Flightless Bird, American Mouth' when I heard it in Twilight. It's not actually a bad song, really good for those who are into indie folk. Sadly, my housemates are all mainly into electro and clubhouse. Only one I can name actually enjoys indie stuff, like me...
EDIT: Incidentally, our newest housemate happens to enjoy smoking weed, so I want to try and find out what music she listens to, if any, when high. Mainly because it's one of my goals to at some point before I hit 21 (so a year and three quarters) to sit smoking weed with a bunch of friends listening to some good stoner music ;D.