This documentary is very informative, just like the documentary it was cloned from -- GRASS, 1999. Its a shame so much of the history of marijuana in The Union (2007) was identical to GRASS. I suppose because it's depicting history, duplication is unavoidable. But the number of identical images, and the progression of the story are too similar for comfort. I saw The Union first, and must say it's more polished, more investigative, more to the point and more informative in many areas than GRASS. GRASS had a fair bit of filler. All the more reason it's a shame The Union couldn't have been more original. I particularly liked the exploration of grow-ops in The Union, whereas in GRASS there seemed to be a lot of rather banal footage about Haight Ashbury and the 'psychodelia' of the 60's and early 70's. The Union was definitely more Canada oriented.