Comedians Cheech & Chong, Cheech Marin (L) and Tommy Chong, pose with artificial marijuana plants for photographers after announcing their first comedy tour in 25 years during a news conference in Los Angeles in this July 30, 2008 file photo. Thirty years after they popularized the myth of stoners as amiable goofballs in "Up In Smoke," film and television producers are instead portraying pot smokers as regular folks from all walks of life. REUTERS/Fred Prouser/Files (UNITED STATES)