Who the heck is Doug Benson? Well you’ll find out if you watch “Super High Me,” a stoner movie that’s actually a documentary about how California is fast-becoming the land of legally consumed marijuana.

Benson is a dry, understated comedienne who likes to smoke pot a lot. At the behest of a young filmmaker named Michael Blieden, Benson decided to take one of his pot jokes, one based on Morgan Spurlocks’s documentary “Super Size Me” - about the impact of eating at McDonald’s three-meals-a-day for 30 days - and make a movie out of it.
Benson goes a month without smoking any marijuana and then takes the SAT and a few other tests. Then he goes a month straight smoking nothing but marijuana, and takes those same tests again. It’s intriguing.

But the most interesting thing about the documentary is how it shows first-hand the booming medical marijuana business in Los Angeles (aka Los Ganjales) and Oakland (aka Oaksterdam). Sometimes federal anti-drug agents show up and ruin the party, but overall the potheads seem to be settling down and rooting themselves in. To learn more about this doc, or buy a copy of it, visit www.superhighmemovie.com.

Takes a little while to get up to speed, but once it finds its 5th gear, the very American story lines of Doug Pray’s ‘Big Rig’ take hold.

These Big Rig truckers reveal that “freedom” means different things to different people. But they all tell the same story of the independent trucker losing to corporations as rising diesel prices slash into their take-home pay.

This two-hour documentary shows the power of a determined independent filmmaker such as Pray (the man behind “Hype,” “Scratch” and now “Surfwise”) who traveled through 45 states and rode 25,000 miles to make this movie. He directed, shot and edited the film himself.

Since the shooting for the film was completed - likely sometime in 2006 - diesel prices have doubled to nearly $5 a gallon. Still American truckers keep rolling - though I did recently hear about Big Rig drivers circling downtown Washington D.C. in protest of the high fuel prices.

For more information about the film, or to buy a copy of it, visit www.bigrigmovie.com. Posted on the Web site is a list of truck stops across the country where the documentary will be shown this summer for free.

Almost everybody knows John F. Kennedy was shot in the head and killed by a sniper while riding in a convertible through downtown Dallas in 1963. But what about his brother, Robert?

Didn’t he get shot and killed too? And didn’t his assassination - yes, hard to believe two brothers died the same gruesome way -  become shrouded in controversy just like the assassination of JFK? Yes, yes and yes.

“RFK Must Die,” showing on the Documentary Channel this Sunday, June 29th at 5 p.m. (Eastern time), does all the research you want to do - but never get around to doing - regarding this national tragedy.

Was it a solo act of terrorism by a Palestinian-American  named Sirhan Sirhan, a man angry with RFK, the Democratic presidential nominee, because he planned to buy 50 war planes for Israel?

Or did the U.S. Central Intelligence Agency play a role in Sen. Kennedy’s death? Maybe Sirhan Sirhan was just a brainwashed pawn in the game. Investigators say they found a notebook in which Sirhan had repeatedly written “RFK Must Die.” Watch the documentary and see for yourself.

Not often is it OK when Martin Scorsese - who made the excellent Bob Dylan documentary “Don’t Look Back” and the Rolling Stone’s concert doc “Shine a Light” - hands off a Bob Marley project to someone else. But it is in this case.

Jonathan Demme, another great filmmaker, has agreed to direct a film about the life and music of Marley, the world famous reggae artist and songwriter. The untitled project is due for release Feb. 6, 2010, the 65th anniversary of Marley’s death, according to Variety.

Like Scorsese, Demme directs documentaries as well as narrative features. Demme’s most recent doc work includes “Jimmy Carter Man from the Plains” and “Neil Young: Heart of Gold,” and, of course, “Stop Making Sense” his well-known Talking Heads concert film.

Michael Moore is at work on a follow-up to his hugely successful film about the U.S. government response to the terrorist attacks of September 11, 2001, according to Variety.

“Fahrenheit 9/11,” released in 2004, is the highest grossing documentary of all-time. It earned $119 million at the U.S. box office and another $100 million worldwide.

By comparison, “SiCKO,” his most recent documentary about the abysmal state of healthcare in the U.S., earned a paltry $24 million at home and $11 million abroad, according boxofficemojo.com.

Overture Films and Paramount Vantage will co-finance and co-produce the new Moore film, which, according to Variety, “will pickup where ‘Fahrenheit 9/11′ left off.”