A martial arts black belt I used to know named Alex Turnbull has got a trailer for a short film he directed up at www.youtube.com/watch?v=hhj8igPl2Oc. Alex used to be a music producer (actually, maybe he still is) and the gym where he now trains has a dance class as well as classes in pencak silat, a dance-like Indonesian martial art. Consequently this trailer ends up looking like Jamiroquai competing in combat breakdancing.
Btw, I didn't spot Alex in the actual trailer -- the chap doing all the twirly hands stuff is Steven Benitez, Alex's instructor.
Hang on, just found a short bio of Alex's music credits: "...founding member of legendary 23 Skidoo, whose early work inspired groups such as The Chemical Brothers, Primal Scream and The Future Sound of London. Alex also set up and ran Ronin Records, one of the UK’s longest running and best established independent hip hop labels. He has also under his belt an extensive CV of music remixing work which includes remixes for among others Seal, Ice T, Stevie Wonder, Massive Attack, Da Brat, Nenah Cherry and Kylie Minogue."