iRobot Roomba Intelligent Floorvac (2002)

A robot that does housework? Sign me up! With more than 2 million users, the Roomba is considered by many to be the first commercially successful domestic robot. The 14-inch-wide vacuum cleaner may look like an oversize hockey puck, but its brilliant design lets it avoid obstacles while sucking up every speck of dirt--including those dust bunnies cowering under the couch. Photo courtesy of iRobot.