Alfred Hitchcock, the master of dramatized horror-suspense, once told me that the greatest scares came in broad daylight, not in the dark. So it might be with "Food, Inc.," a documentary that opens our eyes to what we have been conditioned to feel was a "safe place" in life. We still go to grocery stores that feature pictures of rustic farms that suggest Americana. We notice that a double cheeseburger is cheaper than broccoli. We are in a rush. We buy cheap and save time. We may be fooling ourselves. "Food, Inc." shows the over-controlled world of food production, a...