Pandora Internet Radio

So there is this cool site: Pandora Internet Radio. You just sign up for free, tell it what artists/songs you like and it tries to create a radio station based on what you tell it. Then you can rate the songs it chooses if you like them or not and it will customize even more. You can create many stations too, so you don't have to have Aerosmith and Bach on the same station. Try it out!