More than 100 2-liter bottles of Diet Coke. More than 500 Mentos (Note: 1 of each will work). And two men in goggles and lab coats. You can imagine that this portends a fateful—and combustible—encounter. But perhaps you can't imagine just how combustible, nor how stylishly orchestrated. EepyBird compares the results to a "mint-powered version of the Bellagio Fountains in Las Vegas." A Blue Man Group-hijacking of Old Faithful comes to mind too, though certainly the Bellagio corners the market on geyser choreography—until EepyBird, that is. After you ogle the video, take in some of the earlier experiments, such as...