Turning a surface into a touch sensitive device. Cezzix shares his work on an app called huvr in this video.
Cezzix These demos were created using an app I am working on for Leap Motion called huvr. The goal of this project is to create something that can fully replace the mouse on desktop PCs. These demos show the software after only one week of development, so we have a long way to go before reaching that goal. The final version will use the desk as the touch surface instead of the glass panel.
http://www.youtube.com/watch?v=o4fEuWSGSiM