From Wikipedia

Food Inc.

Food, Inc. is a 2008 American documentary film directed by Emmy Award-winning filmmaker Robert Kenner. The film examines large-scale agricultural food production in the United States, concluding that the meat and vegetables produced by this type of economic enterprise have many hidden costs and are unhealthy and environmentally-harmful. The film is narrated by Michael Pollan and Eric Schlosser, two long-time critics of the industrial production of food. The documentary generated extensive controversy in that it was heavily criticized by large American corporations engaged in industrial food production.