Michael Moore, the director of the top-grossing documentary of all time, "Fahrenheit 9/11," is releasing his latest documentary for free on the Internet. It will be the first feature-length film from a major director to be released for free on the web.  Below is the just-released trailer for the film. 

Called "Slacker Uprising," the film follows Moore on his 62-city "get out the vote for John Kerry" tour during the 2004 presidential campaign, where he used humor, giveaways and music to enlist an army of young people — "slackers" in Moore parlance — to vote Democratic. Starting out in Elk Rapids, MI, in front of an audience of 400, the tour grew to a point where up to 16,000 slackers a night would come together in auditoriums to see Moore and his traveling band of speakers, comedians and musicians promote voter activism.

The film shows highlights from the tour, which included stand-up comedy, zany marketing stunts like free Ramen noodles and clean underwear and performances by top musicians. It is a look at the genesis of a new political youth movement in America that, according to the producers, became "a generation of young people who would signal the eventual era of ‘Obamania’ that would take place just four years later."

"In the interest of fair warning, people who are not fans of mine will not like this movie," Moore states cautiously in the production notes. "This movie has way too much of me in it, and way too many tens of thousands of people liking what I’m saying. If you’re a McCain fan, this film should probably be rated X."

Downloads will be available on September 23 at the website Slacker Uprising.