Guile made a brilliant suggestion in the comments to yesterday's article on programming the motion sensor in the latest generation of PowerBooks: write an app that reboots the machine if you turn it upside-down and shake it, the way you would when erasing an Etch-a-Sketch! (Alternately, you could make that motion simply empty the Trash.)

Photo: PowerBook rotation axes for it built-in accelerometer.

Mac hackers -- get to work!