Since I think commercially owned radio pretty much sucks a fat one these days, I just listen to streams from college stations & internet sites while I'm at work. I thought I'd post links to a few of my favorites.. feel free to post more, maybe we can get a good collection of sites together.
Cal Poly radio, KCPR -
http://129.65.35.106:8000/listen.pls
CU Boulder, Radio 1190 -
http://www.radio1190.org/
Dublab -
http://www.dublab.com/index.asp (can be wierd, but usually cool)
ETS Global -
http://www.ets-global.org/index.asp (all trance all the time!)