Beeing a pure BJJ'er for a few years now I usually don't speak much on my old JKD stuff. But I remember watching Paul Vunak teaching Pananjakman, and showing to add in these little outside low heel kicks to the tendon behind the knee while you were doing Hubud upstairs...I kinda thought, "EH..I don't know about these, pretty weak.."

Well, I'm watching UFC 49 today and there's Josh Thompson and Yves Edwards all tied up and throwing pananjakman heel kicks at each other..I couldn't believe it! The evolution of the arts blows my mind