The (fictional) Martial Art practiced by the third Doctor (portrayed by John Pertwee).
The martial art itself involves pure pwnage that can be applied to any situation. It is likely based around real world Aikido along with some Karate bits thrown in for good measure.
If you've ever watched the third Doctor unleash his martial arts skills and thought "OMFG! That was AWESOME!", the art is called Venusian Aikido.