Our staff loved this one. Personally I've never used the gesture much - too much in the habit of Win+D then Alt+Tab - but people were at first disbelieving and then endlessly amused. Says something about school staff that, perhaps.
So for the entertainment and delight of your peers, here's ICT Tip 036 - Aero Shake.doc
Any monetary tips you get from people, let me know and I'll pass you my PayPal details. Not that you should be charging money for these anyway, of course -