It's that time again -- the Engadget Show returns this Saturday, March 20th at 5pm! We'll be joined by Nicholas Negroponte, founder of the MIT Media Lab and OLPC project for what's sure to be a rousing conversation. What's more, we'll have Joystiq's Chris Grant on hand and Sony's Senior Researcher Richard Marx will be showing off the PlayStation Move and we'll be letting some lucky audience members demo it live on the show! You'll be meeting our new investigative correspondent Rick Karr and we'll have more o
