Moving boxes using hands demo shows live depth captured mesh interaction with scene objects; combining 3D world and depth captured hands (or other objects) rendering and Bullet Physics. Run the live demo here.
Simple background removal implemented as flood-fill of background color to similarly colored pixels. Works only with simple backgrounds - e.g. room walls on the demo gif. Run the live demo here.
Typing in the air tutorial shows how to use depth stream and WebGL transform feedback to do simple gesture recognition. Check the tutorial text and run the live demo here.
3D point cloud rendering demo shows how to render and synchronize depth and color video on GPU. Run the live demo here.
HTML5 Depth Capture tutorial shows how to access depth stream, check the tutorial text or run the live demo here.