Moving around a human 3d skeleton in volumetric display with LEAP Motion – created by Ashish Chandwani, Ngoc Do, Connie Huang, Ted Tagami, Alyssa Trinh at the University of Washington.
Create and interact with 3d models you created with your hands and Leap Motion in your browser. With different gestures you can do different stuff like creating, rotating and zooming. Check out this demo of Okyp by Marc Teyssier.
bsilvereagle demonstrates how to use LEAP Motion to manipulate objects in 3D Space with three.js.
User and programmer Theo Armour has published a nice demo of drawing in 3d with LEAP Motion. All you need is a browser, your hands and a leap motion.