An English-teaching robot stands in front of children at an elementary school in Daejeon, 140km south of Seoul on December 11, 2009. Robot teachers — who never get angry or make sarcastic remarks — have been a hit with pupils during a pilot project in some South Korean schools, a government report said. (Knowledge Economy Ministry/AFP/Getty Images)

http://www.boston.com/bigpicture/2010/03/robots_part_iii.html