This one I'm just not doing. I know, I'm supposed to do all recommended blog posts, but I can't compare these three authors, there's just not a good post here. They're three of my favorite authors, they're all funny in different ways, and there's no really amusing way to compare them.
Instead, I'll make a recommendation: if you have never read anything by one or all of these authors, don't go another week without reading one of these:
In A Sunburned Country by Bill Bryson
My Life and Hard Times by James Thurber
Dave Barry's Complete Guide To Guys by Dave Barry
You won't regret it.