I just turned on CNN's Larry King Live and saw Dr. Sanjay Gupta interview former President Bill Clinton. Dr. Gupta asked Bill Clinton how his health was and inquired about his shaking hands.
Bill Clinton said it wasn't Parkinsons, but that when he writes for a long time or plays videogames the tendons can act up or something. He even motioned with his hands out front, holding an imaginary controller, pushing buttons. From the shape of his hands, I think he's an XBox 360 or PS3 fan.
Also posted at my personal blog Reiding...