Rube Goldberg Machines are pretty neat. I'm not sure what the fascination behind them is, but I suppose it's the same thing that makes us like the other kitchen gadgets, hardware gizmos, and homemade inventions of the world.

I don't speak Japanese myself, so I have no idea what these machines are promoting.  The music that accompanies them is kind of catchy to - in an amusement park kind of way.