I think Travis Pastrana is such a badass. I don't know what category he goes in because he's incredible at all motorized sports, he hops on a bike and can do a backflip immediately. He's one of those people who understands gravity (sort-of) in the sense that he can throw himself into some weird spin and come out on his feet, on any vehicle. He's good at everything he does and usually manages to not hurt himself.
On a more athletic level, I think catcher for the SF giants Buster Posey is a badass too, he's so young and he's already getting paid a shitton, nuff said.