We've all seen people's head's stitched on other people's bodies in the movies (remember the Winklevoss twins?), but seeing it in realtime is a whole different beast.
In fact, it's a bit monstrous.
From Chairman Mao to Michael Jackson, Arturo Castro, the designer behind the clip, used face-tracking software to have a computer digitally imprint the faces of others onto his own. Castro used the Facetracker API to build the tracking program that essentially stretches images of other people's faces to fit his own.
While some of the examples look spot on, in others face-shape seems to make all the difference, creating distorted examples of some notable figures.
It's not quite a real-life "Face Off," but its definitely a fun everyday use.