Thomas "Tommy" B. Kin Chong (born May 24, 1938) is a Canadian comedian, actor and musician who is well-known for his stereotypical portrayals of hippie-era stoners. He is most widely known for his involvement in the marijuana-themed Cheech & Chong comedy movies with Cheech Marin, as well as playing the character Leo Chingkwake on FOX's That '70s Show.