Pandora

Like music? Go here and check out Pandora. You can type in a song name or artist and it will create a playlist of related music for you which you can listen to as streaming audio. As you rate songs and as the creators of this project add new music, the list will evolve. There's no downloading, it's not one of THOSE sites (not that there is necessarily anything wrong with those sites, but the bad press has some folks nervous). Pandora is just something very neat created by The Music Genome Project, and is a truly excellent way to explore new music.