Ip Man, 1 & 2. Supposedly about the founder of Wing Tsun, which is somewhat similar to Ju-jutsu.
Man, it's a relief to see a martial arts movie where the principles don't routinely fly around like superman. They (Ip Man 1 & 2) are about the Japanese occupation, so they have the same setting as the greatest martial arts movie of all time, Fist of Legend. Unfortunately it kinda lacks Japanese characters which aren't complete caricatures. Still, it's like a welcome return to the old formula.
Ip Man kicking some ass :
http://www.youtube.com/watch?v=3qhPDEOYbx4