A/K/A Tommy Chong. Its not really about weed, its more about the prosecution of Tommy Chong. Its still really interesting and makes the war on drugs look pretty stupid.
Those that have Netflix live stream, check out 'CNBC Originals: Marijuana USA.' Examines the new generation or marijuana entrepreneurs across America. One of the better pro marijuana documentaries out.
Botany of Desire! Great Doc. about the mutualism of man and plant and why their interactions are vital for terrestrial ecosystem function.
National Geographic just came out with one called "Super Weed". Just downloaded it a few minutes ago, haven't watched it yet.