I love music. I love practically every genre out there, minus rap (and even then I find nuggets of good stuff). My MP3 collection contains everything from death metal to classical to country to hip hop.
At work my favorite style of music to listen to is Trance / Dance / Techno. I like it because it's interesting music, usually little lyrics, and provides a good source of rhythm (which helps me when I'm coding).
Enter Last.FM. Endless music, randomly suggested, all "close" to a specified genre or artist.
Of course, it's blocked at work. Too bad I'm not more technical and don't know how to circumvent the system ;)