Humm, I know it's probably not what you're looking for, but Acclaim has made a MMORPG based on the ancient Asia, and therefore it's focused ONLY on martial arts. The graphics are actually pretty good, and obviously the 'moves' in the game are inspired by moves from real martial arts.
For example, I played a Shaolin Monk for a while, later on I found a video on youtube with real Shaolin Monks doing thing, was actually quite similar.
The game is called 9dragons, you can read about it here
9Dragons Home Page