I believe that Mr. Hung was the very first Chinese to play lead actor role in US TV drama. I forget the title of the show but it was aired on CBS channel for two seasons in the late 90s, around 1997 and 1998. The lead actress in the show was Kelly Hu, an Asian American.
Sammo’s influence in HK cinema is greater than even Jackie Chan. He was not just an action star/choreographer. Many great dramas/comedies, the vampire movies, etc were produced by him.