Documentaries for use in classroom activities?

I like using clips of documentaries in my English classes. I usually use Michael Moore’s stuff to teach logical fallacy or argument. I’ve also used “Supersize Me” (although, it’s not one of my favorites) and “Walmart: The High Cost of Low Prices.”

Do you have any recommendations for classroom-appropriate documentaries (or clips from documentaries) that might be useful in teaching argument or that might spark academic discussion?