Giant Waterslide Jump is Today's BIG Thing - AUG 05, 2009
http://www.todaysbigthing.com/2009/08/05

Incredible landing and distance.

Since the dawn of time, man has battled the forces of gravity. We've built gliders, wings and contraptions of all sorts. In the end, all it took was a simple giant water slide down the side of a mountain.

I don't think it's fake.