Pandora.com and thesixtyone are pretty much it for me. I have the Pandora One subscription, and I have that running almost 40 hours a week. If I hear something

Pandora.com and thesixtyone are pretty much it for me. I have the Pandora One subscription, and I have that running almost 40 hours a week. If I hear something I like, I create a station for it. Last.fm had a sweet obscurity filter that would give you crazy indie band music, which was a nice feature.