Ok, so here is the deal. The first person gives a random band/group/song that they really like. The next person then listens to that song, on say Napster or something, and then comments on it. Say something about how much you liked it. How you feel about that genre in general. Et cetera.
The idea here is for everyone to share some of their favorite music and for everyone to find some new music.
I will go first. Go Here to listen to Army of Freshman. They are an alternative/pop-punk/punk group that I thoroughly enjoy. I recomend 'At the End of the Day'. It is my favorite of their songs.