This documentary has been in my Netflix queue forever... so long, in fact, that I decided to Google the title to find out if I could buy the DVD. Doesn't look like it... yet. What I did discover, however, is that The Real Dirt on Farmer John will be screened at The Crest on July 27, 2007. Woo hoo! Mark your calendars!
See where else it's screening nationwide and check out the rave reviews.
June 20 edit: Looks like The Real Dirt on Farmer John will be premiering on the PBS Show, Independent Lens.
Also, here's a link to an interview with "Farmer John" Peterson on Fresh Air with Terry Gross.