Bruce Lee is still legendary as the greatest martial artist of all time. He didn’t actually make that many movies, just a handful really, but even if you never saw any you may have heard of them: Fist Of Fury, The Way Of The Dragon and most of all Enter The Dragon are legendary for a reason.
Before he acted, he taught and among his students was basketball legend Kareem Abdul-Jabbar, and actually, Jabbar was pretty good.
In his final, unfinished movie, The Game of Death - Lee died during filming - he spars with his old student.