I was thinking how I could define him for you. Let's see. His show (which has more or less the same structure since 1985 I think, with changes in the cohosts) has tow part. A not so fun and a clearly fun one.
The clearly fun one is mainly based in reading news, magazines, and similar stuff. Not too harsh. Nothing Howard Stern. Much more inocent and many time totally absurd (example, once I heard them talking around 10 minuts about the almond milk _I hope it is called like that in USA. Is a cream made with almond oil, basically_. They talked about how difficult it was to milk an almond, how they need to have kids because of they small hands and how sometimes they had to kidnap them because of laws against chidren at work)
The not so fun one is my fav though. He always tell a story about something "serious" (history, literature, some biography) with an unformal, funny style. But the knowledge is solid. I learnt a lot with it.
