BOSTON ( TheStreet) -- When Westinghouse Electric unveiled a seven-foot-tall aluminum robot named Elektro at the 1939 World's Fair, Americans fell in love with the notion of anthropomorphic machines doing work for them.
Robots, now commonly seen roaming factories and vacuuming floors, create less of a stir 70 years later. In terms of whiz-bang entrepreneurship, investors will probably remember 2009 as the year of solar cells, smart grids and smarter drugs.
Robots remain as cool as ever, and the past year offered plenty of robotic innovation in a variety of fields, including, most importantly, the field of fun. Here are five robotic innovations that are sure to change the world, or at least the living room.