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Tommy Chong and Cheech Marin collaborated on their comedy albums and movies, including "Up in Smoke", "Cheech & Chong's Next Movie", "Cheech & Chong's Nice Dreams", "Cheech & Chong's Still Smokin'", and "Cheech & Chong's The Corsican Brothers". The two actors and comedians have been friends since the early 1970s, and their collaboration has resulted in a number of popular films and albums.