
Thomas Bing Kin Chong (born May 24, 1938) is a Canadian-American 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 on Fox's That '70s Show.

The Simpsons
TV • 1989

Zootopia 2
MOVIE • 2025

Raw
TV • 1993

Sliders
TV • 1995

South Park
TV • 1997

Real Time with Bill Maher
TV • 2003

Jimmy Kimmel Live!
TV • 2003

Dancing with the Stars
TV • 2005

Miami Vice
TV • 1984

Hot Ones
TV • 2015

That '70s Show
TV • 1998

MTV Video Music Awards
TV • 1984

The Masked Singer
TV • 2019

The Masked Singer
TV • 2019

Raising Hope
TV • 2010

Celebrity Family Feud
TV • 2015

Uncle Grandpa
TV • 2013

Franklin & Bash
TV • 2011