David Belle invented parkour in France. It has spread mainly by videos on the Internet, and has been embraced in Europe and the United States by thrill-seekers and martial-arts adepts.
Conan O'Brien and Hunter S. Thompson with machine guns: "Like the safety guy just said, move your whiskey glass before you start shooting!"
Crazy people ride bigwheels down the crookedest street in San Francisco. Hilarity ensues.