Rollebot

Japanese electronics giant Hitachi displays its humanoid robot 'Emiew2,' which can move over uneven ground and small gaps on its wheeled legs, at the company’s high-tech exhibition in Tokyo on July 22, 2010. (Photo by Yoshikazu Tsuno/AFP/Getty Images)

9-Month-Old Babybot

Japan's Tokyo University professor Yasuo Kuniyoshi unveils 9-month-old baby robot 'Noby' at his laboratory at the Tokyo University on June 11, 2010. The baby robot has two cameras and two microphones on its head, and is also equipped with some 600 touch-sensors under its skin. (Photo by Jiji Press/AFP/Getty Images)

Breakdancebot

Humanoid robot Manoi AT01, produced by Japan's toy robot maker Kyosho, performs a hip-hop dance at the International Robot Exhibition in Tokyo on November 26, 2009. (Photo by Yoshikazu Tsuno/AFP/Getty Images)

Dentalbot

A dentist from the Showa University Dentistry School demonstrates a treatment on a dental patient robot named Hanako Showa, at the University's dental clinic in Tokyo on March 25, 2010. Japan’s robot maker Tmsuk and the Showa University unveiled the dental patient robot to be used for student training, which imitates human reactions such as coughing, tongue movement and pain reaction. (Photo by Yoshikazu Tsuno/AFP/Getty Images)

Hondabot

Ketch and Hiro-pon, members of the Japanese pantomime group Gamarjobat, take part in a promotional birthday party for Japanese auto giant Honda Motor's humanoid robot Asimo at the company's headquarters in Tokyo on October 31, 2009. (Photo by Yoshikazu Tsuno/AFP/Getty Images)

Humanoid

This combo picture shows a humanoid robot HRP-4C, developed by Japan's Advanced Industrial Science and Technology (AIST) showing her skills during the Digital Contents Expo in Tokyo on October 22, 2009. (Photo by Yoshikazu Tsuno/AFP/Getty Images)

Maidbot

A housemaid-shaped guide robot, developed by Saitama University's professor Yoshinori Kobayashi, delivers giveaway chocolates to the guests during a demonstration at the Robotech exhibition in Tokyo on July 29, 2010. (Photo by Yoshikazu Tsuno/AFP/Getty Images)

Modelbot

A model poses with a humanoid robot called Geminoid-F, shaped to resemble the model at a press conference in Osaka, on April 3, 2010. (Photo by Yoshikazu Tsuno/AFP/Getty Images)

Newbornbot

An engineering student soothes a baby robot during a presentation at a laboratory in Tsukuba University, Ibaraki Prefecture on February 12, 2010. It giggles and wiggles its feet when you shake its rattle, but will get cranky and cry from too much tickling. (Photo by Kazuhiro Nogi/AFP/Getty Images)

Secretarybot

A receptionist robot, produced by Japan's robot maker Kokoro, smiles during a demonstration at the International Robot Exhibition in Tokyo on November 25, 2009. (Photo by Yoshikazu Tsuno/AFP/Getty Images)

Singbot

Humanoid robot HRP-4C, developed by Japanese institute AIST, sings songs accompanied by Yamaha's autoplay piano for a demonstration of instrument giant Yamaha's voice synthesis technology 'Vocaloid' at the Ceatec exhibition, Asia's largest electronics trade show Ceatec in Chiba on October 6, 2009. (Photo by Yoshikazu Tsuno/AFP/Getty Images)

Teachbot

A humanoid robot for educational purpose is unveiled by Japan's Nippon Institute of Technology associate professor Yuichi Nakazato at the college's campus at Miyashiro town in Saitama on December 19, 2009. The robot has been developed with Japanese robot venture ZMP for use as an assistant for teachers utilizing a mobile projector on its head. (Photo by Yoshikazu Tsuno/AFP/Getty Images)