This is a bit freaky, using the new PowerBooks motion sensors to wave windows around, via Gizmodo.
You could get some cool games from that or simply annoy everyone with "Look at my wavy windows!" - thats what Id do anyway ;-)
3rd March
The PowerBook Sudden Motion Sensor
31st January
Apple - PowerBook G4
Ive just noticed this interesting little thing about the new PowerBooks. Presumably we'll have an OS update at some point so we can all have this.
*Update:* Definitely not in any Software Update, its a hardware thing :-(