David G. Hall is one of my favorites as well. I remember the recent bit where he was yelling at Phil to do the promo for the mint anal wipes, a new sponsor to the show.
Phil Hedrie is an acquired taste, but when you "get it", it can be the most entertaining show on radio (next to a good Savage show).
"All you can eat Negro" is the funniest thing I have ever heard--anywhere.