Check out this episode of the National Geographic show "Taboo", which discusses medicinal marijuana in California. NatGeo has managed to cover MJ in an unbias light on national television. Taboo | National Geographic Channel
i anly got to watch the 4 min clip (couldent find rest, if there was any) but from what iv saw i was really surprised, there wasnt any bs and they basicly whent over the main points or argument for our end.
"Marijuana: A Chronic History" on the History Channel is a pretty good documentary that is fairly unbiased.