"Up In Smoke" is a 1978 comedy film directed by Lou Adler and starring the comedy duo Cheech and Chong. The movie follows two stoners, Cheech Marin and Tommy Chong, as they embark on a series of misadventures while trying to transport a van made entirely of marijuana from Mexico to Los Angeles. The film is known for its humorous take on the counterculture of the 1970s and its portrayal of the drug culture. It became a cult classic, influencing future stoner comedies and solidifying Cheech and Chong as iconic figures in comedy.