Kvetching for ColumbineBeing MICHAEL MOORE is draining. Mr. Moore, who is known for ambushing his subjects, often bigwig corporate types, with cameras and crews, is tired of picking up the slack for, well, everyone. "I think it's an embarrassment that it's somebody in a ball cap with no college education that's going in to ask these questions," he said. "It's disgraceful. I can't stand to look at myself on the screen cause I look at that and I think, `Boy if that shows there's anything wrong with the American media, it's that the job is left up to this guy.'...