In researching Monsanto I found this really powerful documentary. If you are concerned about one multi nation corporation controlling the worlds food supply then you will want to watch this.
The French documentary, called “The world according to Monsanto” and directed by independent filmmaker Marie-Monique Robin, paints a grim picture of a company with a long track record of environmental crimes and health scandals. 1:48:57
There is also a 10 part high def version available on Youtube.