There are literally millions of PCs and Macs with few options for a modern touch experiences, one of these antiquated devices just happens to sit in my office.  I am seriously considering giving Leap Motion a try, it is very small device that tracks hand movements (without touch) in the same way that a Kinect tracks your entire body. You can Pre-order Leap Motion today for $79.99 and it should ship in late July, I am actually interested what developers can really do with this nascent device.