You mean Michael Savage? He fits this bill. And, sad to say, Bill Bennett is on the cusp of this. He just doesn't know how to handle callers efficiently.
I've never listened to him, but I have listened to Boortz since about 1972. I started late with Rush, about 1996. I can see the copycats a mile away. I can also see the genuine article which, as always, has its critics and its praisers.
What we really need to worry about is not how good or bad any of these pundits are but whether or not their medium is going to be shut down by the anti-free speech McCain/Feingold crowd. The laws are on the books friend. We should be wary of the tampering that is about to come.