If I were you, trying to get into a new genre, I'd take some of the names people provided here, plug them into Pandora, and see if you like what it spits out. Then you can use the "more of that"/"don't like that" feedback option to hone in on things. I've found Pandora to be an excellent tool to learn about new genres where I may know a couple artists I like, but about which I'm not terribly familiar.