King Corn is coming to a theatre near you (hopefully) so look for it. If its not coming to a theatre near you, pester your local cinema to get it.
I haven't seen the film yet, but it's really bringing a lot of education to the world (USA at least) about the overuse of corn in our diets. So that has to be good news for us!
The makers of King Corn are also doing a "Corn-Free Challenge" for the month of November, which I would encourage everyone to signup. Most of us already do it, or at least mostly (there are a few that still eat corn-fed meats), so lets make this challenge the biggest they've seen.