Forget buckets of blood. Nothing says horror like one of those tubs of artificially buttered, nonorganic popcorn at the concession stand. That, at least, is one of the unappetizing lessons to draw from one of the scariest movies of the year, Food, Inc.," an informative ... documentary about the big business of feeding or, more to the political point, force-feeding, Americans all the junk that multinational corporate money can buy. You'll shudder, shake and just possibly lose your genetically modified lunch. The director Robert Kenner jumps all over the food map, from industrial feedlots where millions of cruelly crammed cattle mill about in their own waste until slaughter, to the chains where millions of consumers gobble down industrially produced meat and an occasional serving of E. coli bacteria. The voice in the opening belongs to the ethical epicurean and locavore champion Michael Pollan, author of In Defense of Food and The Omnivore's Dilemma. Mr. Pollan ... is a great strength of "Food, Inc.," as is one of its co-producers, Eric Schlosser, the author of Fast Food Nation. [They], together with Mr. Kenner, chart how and why the villains not only outnumber the heroes in contemporary food production, but also how and why they outbluff, outmuscle and outspend their opponents by billions of often government-subsidized dollars. The movie takes a look at the animal abuse in industrial food production - including clandestine images of sick and crippled cows being prodded to join the rest of the ill-fated herd - but its main focus is on the human cost. It's a cost visible in the rounded bodies of a poor family that eats cheap if filling fast-food burgers for breakfast and in the obscured faces of farmers too frightened to go on record about Monsanto, the agricultural biotech giant.