He spoofed the "Bruceploitation" trend of kung fu movies at the time to imitate Bruce Lee with his film Enter the Fat Dragon in 1978.
He directed and, along with Yuen Biao, starred in The Prodigal Son in 1982, which is said to contain some of the best wushu caught on film.
The first film he appeared in was Education of Love in 1961.
He is honored on the Hong Kong Avenue of Stars.
He was the action director for female action star Angela Mao.
He helped launch the careers of such stars as Yuen Biao, Michelle Yeoh, Andy Lau, and Cynthia Rothrock.
He worked again with his childhood friend Jackie Chan as the action director for The Medallion.
The first feature film he directed was The Iron Fisted Monk in 1977.
He choreographed the unfinished Bruce Lee movie Game of Death.
His nickname among the Hong Kong film industry is "Big Brother".
He has acted in, directed, or choreographed over 140 movies.
He has been married to Joyce Godenzi since 1995.
He memorized and recited his lines phonetically for his parts in American shows.
He attended Peking Opera School.
He is the grandson of martial arts actress Zhi-Gong Chen.
His son Timmy Hung works with TVB as an actor.
He married and later divorced Jo Yuen Ok, whom he grew up with.
He has two daughters and two sons, Jimmy Kimmy, Timmy, and Stephanie.
He started Bo Ho, a subsidiary of the Golden Harvest film company.
His parents worked in the film industry.
He based his stage name "Sammo" off Sanmao, a Chinese comic book character with three hairs.
Sam = three
mo = hair
Sam + mo = three hairs
He is a member of the Lucky Stars, a group who starred in a series of kung fu comedy films, along with Jackie Chan and Yuen Biao.
He started the hopping corpse genre.
He attended the same opera school as and is close friends with
Jackie Chan and Yuen Biao.
Sammo is 5'7" (1.70 m) tall.
A new movie called "Dragon Squad" featuring Sammo is coming. It will feature Michael Biehn from "The Terminator," too.
He had a cameo in "80 Days Around the World" as Wong Fei-hung.