I've been listening to this for a long while, I like it, and I thought I'd share this with people.
Dementia Radio is my Internet Radio station of choice. It features mostly comical music, mostly the kind of music that would get played on the Dr. Demento show. Most of the DJ's that host shows on D-radio are comedy artists themselves.
I think that Headbangers Ball and 120 Minutes tends to usually attract different audiences. Though I bet that the number of people that would watch both(myself included) is far higher than anyone could realisitcally imagine.