I suspect these are fakes (animation or motion capture rather than autonomous balancing) but if these are for real, they're pretty impressive. Watch the MPEGs at the bottom of the pages: TeamOsaka, Robovie-M.
Videographer: Jason Jones
Videographer: Jason Jones
Videographer: Jason Jones.
Videographer: Commissioned artist and friend of Eyebeam, Jason Jones of Not An Alternative
Videographer: Commissioned artist and friend of Eyebeam, Jason Jones of Not An Alternative
Videographer: Commissioned artist and friend of Eyebeam, Jason Jones of Not An Alternative
Videographer: Commissioned artist and friend of Eyebeam, Jason Jones of Not An Alternative
Videographer: Commissioned artist and friend of Eyebeam, Jason Jones of Not An Alternative