Do you remember Dr. Demento? Many people that I asked do.
Dr. Demento was on local (LA area) radio when I was in junior high or thereabouts and his two hour show was tuned to just the right level of absurd /irreverent / scatological / political / sexual humor for me. Listening now with a more mature ear, it turns out he's actually a very specialized musicologist, specializing in obscure, humorous, and novelty audio recordings.
He's lost most of his distribution, but he's still carried on three radio stations (not within reasonable listening distance). However, he also archives his shows online. I downloaded a show to listen to while driving to Lair of the Bear and it was a hit with my 10 year old.