The Cruelty of Co-workers

Coding Horror lists a number of pranks to play on your co-workers with their computer, including this classic:

Replacing the desktop with a screenshot of the desktop, and hiding all the visible items on it.

I think the message is to lock your computer any time that you are away from your desk, but, as is the way of these things, seems to be more like a list of things you can to to annoy your fellow workers.

Much fun.