I hear you guys on the ghouls front. To laugh about the fact of the man's death is surely ghoulish.
However there's still room to find humor in Grizzly Man, I think. . . When an animated man aims a camera at himself and waxes poetic about a fresh pile of animal manure, it's bound to invite some snickering. Or when he chases and scolds a fox who's stolen his favorite cap. . . Or salutes his untamed animal friends with a buoyant "Hey, Mr. Chocolate!" I imagine Treadwell himself would not deny the viewer some smiles at his antics. And the scene where Herzog steps out from behind the camera to listen to that tape did strike me as over-the-top grandstanding on the part of the director, and perhaps serves as a clue to why Herzog related to his subject. And as far as over-the-top goes, let's not forget the strange (and ghoulish) medical examiner who seems all too eager to assume a larger-than-life movie role.
All that said, the movie also provokes some deeper feelings; humor and poignancy are by no means mutually exclusive, but rather interestingly intertwined. My reactions to Grizzly Man were similar to those I got from watching another favorite documentary, American Movie. That film's subject, the amateur horror movie maker Mark Borchardt, at times seems misguided in his attempts to chase his dream, which give rise to some absurdly comical situations . . . and yet at other times his sense of overwhelming purpose and determination in the face of obstacles, naysayers, and even conventional common sense, arouses admiration and even inspiration.
In short, I have no new suggestion for this thread.