This one is for my buddy Alex, the kitesurfing, freestyle frisbeeing, rubics cube solving idiot.. and yes, it is a Youtube link:Wingsuits
From the Wikipedia Wingsuit article
Wingsuit flying is the art of flying the human body through the air using a special jumpsuit, called a wingsuit, that shapes the human body into an airfoil which can create lift. The wingsuit creates the airfoil shape with fabric sewn between the legs and under the arms. It is also called a birdman suit.