http://www.scottsmindfield.com/2010/06/deadliest-art-you-never-heard-of-enter.html
Then came the biggest revelation. The style had contributed to one of my most beloved movie fight scenes: the scrap between Martin Riggs (Mel Gibson) and Mr. Joshua (Gary Busey) at the end of
Lethal Weapon. That scene has long been held up as an early example of mixed martial arts as well as grittier alternative to more conventional martial arts choreography. Mel Gibson had reportedly trained under a jailhouse rock expert named Dennis Newsome prior to filming the scene. The common ground between martial arts/action cinema and so-called "urban" culture were blurrier than I had ever dreamed. That a Black Man had contributed to one of the greatest fight scenes in modern film had filled me with pride
.

I need to re-watch that fight scene.