Tommy Chong, left, and Richard "Cheech" Marin, pose with a Marc Emery shirt on July 15, 2010 in Montreal. Tommy Chong, half of the comedic pothead duo Cheech and Chong, is endorsing a marijuana activist who's running to lead the B.C. New Democrats. Chong has posted a minute-long YouTube video in which he says Dana Larsen can "change the face of this country." THE CANADIAN PRESS/Ryan Remiorz