People often claim that it was Bruce Lee who was the father of the Kung Fu boom of the 1970s, but was he really? Sure, Bruce brought a sense of realism to the genre, but it was Kwai Chang Caine who set the ball rolling. The other popular TV series Monkey and The Water Margin were also influential, but felt like they were aimed at a younger audience. And for kids like me it wasn’t possible to watch a Bruce Lee movie – they all tended to be rated 18.
I’d go as far as to say that Lee wouldn’t have had the movie success he had, particularly in the west, if it weren’t for the Kung Fu series.
Here’s a good documentary on the making of Kung Fu – I still remember some of these action sequences, particularly the one where he kicks the knife out of the guy’s hand and it sticks in the roof, which is shown in this video. That moment was the start of my lifelong interest in Chinese martial arts.