There is no question that you can try all kinds of fun projects with a Raspberry Pi computer. Te Co Ed has published a guide that shows how you can hack a WooWee Robot with a Raspberry Pi. The hack lets the operator control the robot using a simple PyGame program.
As you can see in the above video, it is possible to use a keyboard to control this robot and put on a fun show with it. Like what you see? You can find more information about this hack here.