My husband and I recently watched the documentary King Corn. It wasn't the best documentary we've ever seen, but it's worth watching.
The filmmakers, two friends from Boston, move to Iowa to grow an acre of corn. After harvest their goal is to follow corn into America's food system. What they discover is the sad truth about corn-fed beef, high fructose corn syrup and the state of America's health.
A lot of the information was stuff I've heard or read before in books like The Omnivore's Dilemma, but most of it was new and fascinating to my husband. It really got him thinking about what he eats (at least for a few minutes after the movie but we'll see if it sticks). He actually went straight to the fridge to check things out. The the only thing he found with high fructose corn syrup was the 7up he uses for cocktails when entertaining. (A proud moment for me considering I was the Coca-Cola & Junk Food Queen all through high school, college and several years after. It makes me cringe to think about all the crap I use to eat on a regular basis.)
There's some great information on the King Corn website as well - information about the film, the Farm Bill and what you can do, both for the state of our nation's health (writing your congressperson) and for your own personal health (changing the way you eat).
Michael Pollan, my author-crush, had a few guest appearances in the movie too. Love that man.