Director Brian Trenchard-Smith has said of this documentary at 'The Daily Grindhouse' website: ''I had arranged to make a documentary about him [Bruce Lee] and I was going to use that to pitch the movie to him but that did not come to pass, because while I was in flight to Hong Kong with my camera crew, Bruce tragically died. So I made a tribute to him called 'The World of Kung Fu' and then a follow-up called 'Kung Fu Killers'.''
