This is martial artist Pek Pongpaet, who along with his friends Don, Taylor and Yusuf performed the motion-capture for the latest Mortal Kombat trailer. So if you thought that was all just computers and make-believe characters, nunh unh.
Fun fact: Pongpaet's favourite fighting game is actually Virtua Fighter II. To the point where he wrote an FAQ for the game. "That's how hardcore I was." Awesome.
Less awesome, but slightly more amusing, is around the 5:06 mark in the video to the left, where Pongpaet re-enacts some Soulcalibur moves at the expense of an office lightbulb.
[via Super Punch]