Food, Inc. anytime -- it's offered at no charge at their site. If you don't subscribe to Netflix, then you can watch it (also at no charge) at TVDuck.
And I'm recommended that you do watch this documentary. Not during dinner, or after any meal. It's not pretty, and it hasn't been made for entertainment.
But you NEED TO KNOW where all that stuff at the local grocery store comes from, and how different it is from the farms of yesteryear. I remember visiting my aunt and uncle's place south of town, feeding chickens and playing with the cute, tiny piglets.
It's not my uncle and aunt's farm anymore. Food, Inc. is a must-see. Please watch it.