Remember Hal? The first conversation between a human being and a robot might well have happened in 1968 in Stanley Kubrick's iconic film 2001: A Space Odyssey. Now, robots are finding their way into work places, homes and popular culture. Google is buying up robotics firms. Amazon is predicting home deliveries by drone. The recent film Her depicts a romance with an operating system. The interaction of humans and robots has become a serious study. When do they help? When do they get in the way? Who's responsible for their actions? Do we need a new code of ethics for dealing with robots?