one of the only films today
that actually uses correct fighting technique, maybe its chuck liddell's involvement but the characters actually use real mma moves like triangle chokes, armbars and their counters. normally in movies they do some kung fu stuff that would never work and just do all sorts of weird strikes to a bunch of bad guys who just plod menacingly forward into the hero's attacks.
but maybe its paul walker also since he usually does correct fighting ex: in 2f2f when someones attacking him he pulls guard and stifles their punches