Your Own Personalised Radio Station

This pretty cool and actually works quite well...

"Type in the name of your favorite band, and within moments the site will be streaming a radio station, featuring songs from that band and others like it, to your desktop through your browser — no registration and no downloads required. You can "tune" the play list by using the thumbs-up and thumbs-down buttons. A new Backstage section is a searchable directory of artists and albums — "your door to the music universe" — courtesy of the Music Genome Project."

http://www.pandora.com/