[juicy.cook]

Not sure if it was mentioned, as I skimmed through, but Pandora is a pretty cool app. You just type in an artist/album/song that you like, and it will play song related to that song based on genre/beat/tempo/etc. I have heard from someone that it gets repetitive, but they use it as their primary radio in their car, as to where I only use it when I am bored or want to listen to music and don't have my Zune on hand. I would definitely suggest checking it out.