I like radio because it is random and unexpected - to me. I don't have to set a playlist of any sort or even own the rights to play the song.

I used to listen to Pandora mainly for that randomly played music. I rarely even vote on Pandora and hate when it asks me to. Now that Pandora has listening caps, I barely use it.

A guy at worked pointed me to tune-in, and it is now my site of choice for online music/radio/whatever.