AIST's HRP-4C robotic girl dancing at Digital Content Expo 2010. Many improvements are made in this model as it wasn't enough efficient when its was first seen. The movement of hands/arms are quit speedy than earlier one, but legs still need to be improved.
It is 158cm (5 feet 2 inches) tall and weighs 43kg (95 pounds) including battery. Its shape and joints are based on the 1997–1998 Japanese body dimension database. It is capable of the recognition of ambient sounds,  and also can sing by the speech synthesis Vocaloid. wikipedia