College radio is the best radio out there. Free from corporate influence that forces most radio stations to play a very small rotation, you can hear totally random music and unprofessional DJs. If you listen to the 4-6 am time slot, you will probably hear a very lonely, tired person. Saturday night often has dance music, and Sunday has exploratory or celebratory music. College radio stations still get sent cds all the time from the big labels, but they don't take payola to play them.
If you are in college you can probably get your own radio show and force people to listen to your favorite music and your ramblings. A lot of it is like the worst of e2 rambling nodes, but the fact that you hear a real voice and music makes it better.
College radio is very similar to the open source movement. Both show how good things can be if people are free to do what they love, and not have to worry about profit.