RECOMMENDED
Aaron Wolf’s alarming yet darkly entertaining documentary, “King Corn,” is about the forces that in the past three decades have led most of the American food chain to be comprised of corn products. He finds an easy way to illustrate what’s up, with Ian Cheney and Curtis Ellis, his co-producers, attempting to raise a single acre of corn and find out where it goes. It’s a terrific, straightforward way to look at a complex subject, one that captures as much verve as Michael Pollan in “The Omnivore’s Dilemma.” (Pollan is an interviewee.) Alarmist? Defeatist? Or merely clear-eyed? Hardly prescriptive about the road back, if there were any possibility of one, “King Corn” still manages to be a vital bit of husk-raking. Get the week’s groceries before you go. 88m. (Ray Pride)