He's a classic.
I really like his drunk box series. Also the fact that he makes all his stunts makes his movies all the more awesome to me.
And the bloopers at the ends are just hella' funny. Man I love those.
edit :
Grenouille88 wrote...
He's a black belt in Hapkido and is trained in Shaolin Kung-fu, and Tae Kwon Do.
Not a master master, but highly trained.
He's also a master (ranked) Wing Chun Kung-fu practitioner.
I know this because I was taking some lessons in that, and at some point, it came up in a conversation with our Si-hing (instructor/master)