Just finished 'The Smashing Machine'; a documentary on Mark Kerr who was a gifted mixed martial artist back in the late 1990's and had all sorts of personal issues. Interesting stuff. I don't train MMA at the moment (though I used to regularly) I am regaining my interest in the sport. Good movie. I would also recommend 'Choke', which is about a brazillian jiu jitsu guy in the world if Japanese no holds barred fighting.