Hi! http://www.pandora.com/ This place is really really cool, you type in a band or a song that you like and it creates a playlist based on whatever you typed in. I've been listening to it for the past couple hours and it is absolutely amazing!
I used to love listening to Pandora but they blocked any non-US users from accessing it. Stupid licencing issues. There are ways around it but it but it's still a hassle.