David Primo writes "TechEBlog has an interesting article on a Tic-Tac-Toe-playing LEGO robot named WOPR — created by Bryan Bonahoom. It uses built-in sensors and a custom program to challenge humans. Video included. From the article: 'The NXT display also enables the inclusion of instructions to the user on resetting the robot. This allowed WOPR to run unattended.'"