In the Michael Moore genre, Spurlock makes himself the protagonist of his documentary investigation into the effects of America's fast food culture. The result is dubious as science, but engrossing as social commentary. We see Spurlock's health, and mood, deteriorate and his physicians' surprise at the effects, apparently even worse than they'd imagined, of an all-McDonald's diet. A useful starting point for discussions of obesity in America, social and cultural perceptions of health and disease, the role of marketing and individual responsibility for lifestyle choices, and so on.