This tutorial is 100% guaranteed-- by me. Seriously. I guarantee that the next time you pull out the trusty old NES for a little Double Dribble session, follow these moves and you'll wow your friends. I was a skeptical at first too, but trust me, it totally works.
A word of warning, though. You have to warm up first. Don't just go out jacking threes from the corner, OK? It's very important that you limber up first, to avoid injuries.
Hat tip: The Sports Hernia