The guy playing Jax plays in a movie called "Blood and bone". Its got like a 6 on IMDB and i watched bloodsport recently for shits and giggles, and i ended up on Blood and Bone on IMDB and reviews were like OMG best martial arts movie ever! So underrated! So i downloaded it.
Wow is that movie bad, but its similar to Gymkata, its so corny and bad that its mildly entertaining so youre able to put up with it till the end. The guy can really bust out some nice martial arts moves, which also helps.
Check out the trailer:
http://www.youtube.com/watch?v=nfVra8yKL7s