Cool stuff

Apple's Macbook have build in a Sudden Motion Sensor. It is basically an accelerometer that detects when the computer may by dropping and immediately turns off the hard drive so that they are not damaged during the impact. However people can use the input from the Sudden Motion Sensor to do various stuff. This guy specifically used bluetooth connection to control his Roomba (a robotic cleaner) just by tilting the Macbook! The cool video is presented here.