While waiting for Undisputed 3, any fan of the series should check a movie called "Steel", here's a description for it:
"In a city run by the corrupt, a corporate attorney has uncovered a dark secret. Betrayed and left for dead, his life is turned upside down when a mysterious woman uses black magic to fuse two souls into his. Now, he must use his new powers to stop those responsible in this explosive comic-style action piece.
This explosive comic-style action short won the Best Martial Arts Action award in the 2007 Action on Film Festival."
So what makes this movie so special about? Well, it's main star is Larnell Stovall, the same guy responsible for fighting choreography in Undisputed 3. Also starring in UD3, there are Lateef Crowder and Ilram Choi. Steel has very nice fighting scenes with a bit of ultra-violence mixed there. This action short shows very well, what these guys can do, and what we could expect from Undisputed 3 when it is finally released. You can find Steel here:
http://www.spike.com/video/steel/2932409