Every once in a while I come across a video that you just know took a lot of time to actually set up and produce, like all those Rube Goldeberg videos I post all the time. Well, here is another one along the same lines.
These guys in Japan took what looks to be a bunch of beer or wine bottles, and filled them with different amounts of fluid to create a different pitch when tapped. They then spaced them out properly, attached a couple of mallets to a radio controlled car, and voila! You drive the car between the bottles and get the theme song from Super Mario Brothers!