The Grand Rapids Press has a review of the Scribbler robot.
The inherent geek-cool factor is what attracted me to the Scribbler. But after an hour of testing, the benefits were obvious: Programming and using the Scribbler do indeed provide the stereotypical hours of fun for the whole family.
The review is light on the tech, so after you get interested in the robot check out the Scribbler website. There you will find that the robot has three light sensors, IR object dectectors, IR line following sensors, and motor stall sensors.