On one level, Morgan Spurlock's 2004 Super Size Me is an incisive look at American appetites, health and consumerism. On another, it's just a brainy Fear Factor episode. Spurlock spends 30 days eating nothing but McDonald's. He gets fat, he gets ill, he vomits copiously. Documentarian, schmockumentarian: any man who will hurl in the pursuit of truth has the goods to make an excellent reality show.
And now he has made one. 30 Days (FX, Wednesdays, 10 p.m. E.T., debuts June 15) franchises Super Size Me's high concept. In each episode, someone undergoes a transformation for a month: living as...