What is the Best Documentary about Pot?

[BaByHorus]

I haven't really seen too many, but i would like to know other people's opinions if they've seen more than me.. What is the most informative and entertaining documentary on anything to do with Marijuana and/or Cannabis?

[dooman]

the one where woody harleson commentates is awesome

[Anonymous]

i only seen one and it was grass and i loved it