Artificial intelligence is coming-of-age at the CEBIT computer fair in Hanover. It's not just about robots, it's about how AI can assist humans in their every day lives at work and in the home. IBM proved how smart their Watson supercomputer is two weeks ago, by beating two top human contestants on the US quiz show Jeopardy. Our reporter Michael Wetzel is in Hanover, and he's been meeting some very smart technology, including Watson, and Reginald the thespian robot.