You know in the gangster movies, how the cops show up and everyone scatters, and a foot chase over the rooftops ensues? Well, this has been turned into a sport. This is not a music video . It's a demo video of le parkour . Originating in France, this sport for people who can't afford skates has grown in popularity over the last five years, and now they have competitions 'n' all . Crazy, but very cool.