It's all in the wrist action
It's amazing what you find on YouTube and, hidden amongst the dross of happy slappers and Jackass wannabes, there's some real gems, such as this superb video showing you how to set up your WiiMote to let you interact with your PC in a Minority Report stylee.Believe it or not, all you need is a WiiMote, a strong infrared light source and some refelctive tape. Then, using the WiiMote's Bluetooth capablility, you hook up to your PC and away you go.
Now all we need is the holographic display and jetpacks... oh, and cars that drive themselves, robotic spiders and a set of draconian laws...