For a talk at the Ignite conference, Marcin Wichary created a looping video about looping videos — you know, when the action in a video loops back over previous scenes, adding new layers of interaction as time goes on. (Think Marty McFly revisiting scenes from Back to the Future in Back to the Future 2.) Most impressively: he did it all live — and here's a behind-the-scenes look at how.