Contact juggling — a form of object manipulation that involves rolling spheres around with the hands and arms so that they look like they're not even moving — has been around for a while. The word juggling is actually a little misleading, since most people seem to think of juggling as tossing at least a few balls up in the air — contact juggling requires that the objects be perpetually in contact with the body.
Much of the time, a clear ball is used, which jugglers take advantage of to completely mess with people watching — sometimes the ball can look like it's floating and doing other things that defy the laws of physics. Needless to say, those who are very skilled at the practice transfix their audiences.
And this kid just might be the best.