Training dvds for Jeet Kune Do. Jeet Kune Do, (Chinese: 截拳道; Cantonese Yale: Jit6kyun4dou6; [tsìːt̚.kʰy̭ːn.tòu]) abbreviated JKD, is an eclectic and hybrid martial art heavily influenced by the philosophy of martial artist Bruce Lee. Lee, who founded the system on July 9, 1967, referred to it as "non-classical", suggesting that JKD is a form of Chinese Kung Fu, yet without form. Unlike more traditional martial arts, Jeet Kune Do is not fixed or patterned, and is a philosophy with guiding thoughts. It was named for the concept of attacking when one's opponent is about to attack. Jeet Kune Do practitioners believe in minimal movement with maximum effect.