I've only seen two of them: Food Fight and King Corn. Both are definitely worth screening. Would still love to see those on a big screen, especially King Corn.
I'm betting, just based on the two I've seen, that Jeff Nield, is right when he says:
If you watch all of these films you'll understand where our food system stands today, a little bit about how it got that way, and you'll have some insight into what it might look like in the future. There's a scary, uncertain future built on greed and there's a bright, progressive future built on community.The Tree Hugger summaries make me glad I had a chance to see a couple of these. And they've made me want to try to pick up the other three, probably in this order:
The Power of Community: How Cuba Survive Peak Oil (I think I could get through it now that I've read the recommendation that I first suspend political ideology to do so).
The World According to Monsanto (at some point, I'm just going to have to face how the influence of this GMO giant).
Our Daily Bread (which will probably push me closer to vegetarianism).