This weekend, the Wonders of Cannabis Festival swings through town once again with no controversy. Of course. This is San Francisco. Late October is the traditional season for celebrating the fall harvest, laying down winter beds, and telling the arresting officer, "Go easy, bro, it's a plant." Emceed by Tommy Chong and his wife Shelby, the two-day event features speakers, medical and legal forums, and some of the best vendors in the world. Contests include Most Stoned, Most Stoned Looking, Most Inconspicuous Use of a One-Hitter wait, we're being high! There is only one contest, but it's a good one: joint rolling, with prizes for the "fastest, longest, fattest, and best one-handed joints." The event was founded three years ago by pot activist Ed Rosenthal, the same Rosenthal who anchored your college bookshelf with such classics as The Big Book of Buds and Marijuana's Grower's Handbook. He'll appear as Can Man, a marijuana magician/superhero, because he's a brofessional.