KinEmote is an easy-to-use application that allows Windows users to navigate the menus of Boxee and XBMC media portals using nothing but hand gestures that are captured by MicroSoft's Kinect camera.
KinEmote is built around OpenNI and NITE Middleware provided by PrimeSense Inc.
The vide below shows a user navigating through a music collection, selecting a song, and then switching to visualization mode. Afterwards the user exits the music section to explore the list of movies available on his system, as well as play and pause, using only his hands to control the interface.
More Info: KinEmote