I've been listening to this afternoon radio show from Philadelphia for the past couple of months at work, and they do some extremely funny stuff on there from 3 -7 pm ET. I guess it's pretty similar to Howard Stern and Opie & Anthony, but I think it's better. Here's the link to the streaming audio if you want to check it out:
I love Kidd Chris. I heard about him on Howard's show and downloaded the podcast and am totally hooked now. Ive been listening for a few months. You can grab his show for free from ITunes. It even has the commercials cut out.