Guitar Hero World Tour debuted

A little earlier today Activision CEO Bobby Kotick debuted Guitar Hero World Tour to the audience at D -- but he wasn't content doing something trite like picking up a guitar (or drums) and playing himself. Oh no, he trotted out Paula Abdul (to judge), and Tony Hawk and Brody Jenner as the front-men for the virtual band. The video's after the break; it's a little bit front-heavy during the introduction, but there's certainly enough gameplay footage in there to get a basic idea of what to expect: Rock Band.