Avatar Machine is a VR-helmet system which allows you to view the real world as a third-person game:
The virtual communities created by online games have provided us with a new medium for social interaction and communication. Avatar Machine is a system which replicates the aesthetics and visuals of third person gaming, allowing the user to view themselves as a virtual character in real space via a head mounted interface. The system potentially allows for a diminished sense of social responsibility, and could lead the user to demonstrate behaviors normally reserved for the gaming environment.
Via BoingBoing.