I .. err .. know of a product that has a clickable Pi symbol in the About box. When clicked with Ctrl and Shift held down and if your account nickname is Sandra Bullock it tells you how many other people figured this out :-)

http://img523.imageshack.us/img523/9836/egg1by2.png

http://img523.imageshack.us/img523/7530/egg2zu2.png

http://img523.imageshack.us/img523/8361/egg3mv6.png

This is an internal beta, this stuff will be taken out from the the production release.