Today I came across the uber-cool Newton Virus, a harmless friendly virus created by Troika, a multi-disciplinary London art & design practice. Inspired by the wit and ingenuity of early viruses which aimed to surprise and amuse rather than destroy, the Newton Virus makes for a great prank to play on your Mac friends!
From the site:
Spice up your colleagues’ day with our Newton Virus, the first virus to introduce gravity to your laptop, causing the desktop icons to fall down as if subject to the gravitational pull from the real world.
Newton Virus comes on a USB key for manual infection. Simply plug the key into a computer and the virus will automatically copy itself on the hard drive.
The virus will then hit at random, but only once. It will not replicate itself, mail itself to your friends or destroy any of your files, but instead provides you with moments of blissful surprise and magic.