As if you folks need any more excuses to waste time, here's another one anyway...

http://www.wwk.kiev.ua/squares.html

Here's another URL for it:
[Link: members.iinet.net.au]

The description on this page is in Russian, so I'll explain how the game works. The idea is to keep the red square away from the blue squares and the black border. To start the game, you click and hold the mouse on the red square. At that point, the other squares will start flying around the place, so you should use the mouse to move the red square so it doesn't get hit by one of the flying blue squares. You should also avoid hitting the black border with the red square.

As soon as contact is made with the border or another square, the clock stops and the game will tell you your time-score.

If you can avoid any clashes for 18 seconds, according to the Russian text, you are an expert.

American flighter pilots have apparently got scores of over 2 minutes.

Give it a try, it's pretty tough. My best score so far (I only started today) is 20.172 seconds