Bruno Kammerl built the biggest waterslide on earth and the test run was more than successful. The video is on YouTube. Sources: http://www.gawkk.
Bruno Kammerl built the world’s biggest water slide and did a long jump off of it. But it may be fake. This would be quite easy to fake with a decent camera, computer and video editing software. It’s just 3 shots composited together. You don’t need “tampering” software. Hell, I could do this and my camera+computer are worth less than a grand combined. Besides, this is clearly viral marketing, so the people who made it likely have lots of money. It blows my mind that there are people out there with such crappy BS detectors. Sources: http://www.youtube.com/watch?