Can man live on fast food alone? Morgan Spurlock tried to do just that. For 30 days, he ate nothing but three "squares" a day from McDonald's as part of an investigation into the effects of fast food on American health. The resulting documentary won him resounding applause and a worldwide release that broke box-office records. Audiences were captivated by Spurlock's experiment, during which he gained 25 pounds, his blood pressure skyrocketed, and his libido all but disappeared.