I can understand people who think Moore is funny, just not anyone who takes much of what he says too seriously. He's plays pretty fast and loose with the truth. Have a look at what SpinSanity says about his latest book (with comments on "Bowling" and lots of links).

Dude, Where's My Intellectual Honesty?

I really like these guys when it comes to pointing out how people twist things to make their point (what Al Franken calls lying). They're also reasonably objective, slapping all sides around pretty regularly.