All I can say about this is that he was popular here in Ohio due to where he's from. Since we have a pee-wee football team (THAT DOES NOTHING BUT RUN IT UP THE MIDDLE), a AAA Baseball team and a basketball team that relied on one person (Lebron) we needed someone to carry the torch.
No I'm kidding (somewhat) the Dilbert thing is actually inline. The whole draw to him in my opinion was the office stuff that went on during his show, and that appeals to a lot of people in the mind numbing jobs. I think the American version of Who's Line is it Anyway, was a good show but wouldn't have been what it was without the other guys.