hmpf

... and decide to spend it in mindbogglingly insane ways.

Such as recreating ancient computer games - with people instead of pixels:

http://www.youtube.com/watch?v=reQ_Laq2O2o&search=human%20space%20invaders (switch on your speakers!)

Discovered at www.boingboing.com.

Or recreating the Las Vegas Bellagio Fountains using Mentos and Diet Coke:

http://eepybird.com/index.html