Drunken Boxing Kung Fu
[An explanation of the Drunken Boxing style kung fu on "Fight Science", Discovery Channel]
Zui Quan, literally Drunken Fist, also known as Drunken Boxing is a category of techniques, forms and fighting philosophy that appear to imitate a drunkard’s movements. The postures are created by momentum and weight of the body, and imitation is generally through staggering and certain type of fluidity in the movements. It is considered to be among the more difficult wushu styles to learn due to the need for powerful joints and fingers.
While in fiction, practitioners of Zui Quan are often portrayed as being actually intoxicated, Zui Quan techniques are highly acrobatic and skilled and require a great degree of balance and coordination, such that any person attempting to perform any Zui Quan techniques while intoxicated would be likely to injure themselves.
[From Wikipedia. Original page is here]