Ugh, nasty. I don't think I could ever tolerate a roommate.
Right now I'm renting a room out of a house from a couple, so no roomies for me. There's another girl my age who's renting the room next to me, but we're never around at the same time. She's nice enough, but keeps to her room like I do. The couple that I rent from are really nice people too, so I'm lucky.