Awesome dad Jose Julio builds daughter an air hockey robot out of 3D-printer parts and a PS3 camera.
As TNW notes: "This is an amazing achievement: the robot doesn’t just move in two
dimensions. It can also predict the puck’s movements, decide whether to
block or shoot, and is adjustable in difficulty (speed, acceleration,
and strategy algorithms)."
Lots more details at Julio's blog, including this video: