Searching for music

Tushar pointed me to Pandora, a free (yes, they have one ad on their page) service based on the Music Genome Project. The goal is to help you find new music, based on your existing music tastes. It works really well and I listen regularly. Its another matter that I can never buy the music I want here.
Sun also has a project that is similar to the Music Genome Project, but just a small page with little information. For that matter Yahoo! Launchcast has a similar offering integrated into their messenger & as a webpage. Works well.