Robert Kenner's Food, Inc. (2008) is a completely absorbing and well-made film about our food: slow food, fast food, and horror-show food. Why do Americans eat the things we do, and why is food controlled by certain corporations? Eric Schlosser and Michael Pollan provide context; animations provide visual explanations (above). Multiple locations and a variety of voices are edited together to effectively hammer the film's points, so much so that Monsanto, for example, has (rather lame) responses posted on the web.
