OK, we'll admit it, we have no idea . All we see is some guy waving his arms in the air (like he just doesn't care) while the computer drops some funky beats. Supposedly, the Wii controllers in his hands are actually activating the various looping samples, but we can't make hide nor hair of which motions are supposed to do what, even with the helpful descriptive text on the video.
If this is a fake, though, it's an extremely elaborate one. The video's maker, DJ Shift 1 has set up an elaborate web page page that lays out the fundamentals of his patented technique. The WiiJaying master is also promoting his first live performance of his at Bootie San Francisco on May 12. Now that's devotion to a hack.