Leap Motion

With just a wave of your hand, you can do magical things with the Leap Motion.  This innovative device seeks to let you use your hands and fingers to control your computer using gestures. You can reach, wave, point, grab, and even pick up objects on your screen. The controller tracks all 10 fingers with up to 1/100th of a millimeter. This allows for the most precise gesture controls.  The Leap Motion is a compliment to your current computer setup, and adds a whole new level of functionality to your computing experience. The future is now.  (Buy $79.99)