While passing an electronics store I saw a demo of an electronic surveillance system. I found this to be rather ironic and an accurate reflection of many failed approaches to security. (Hint: look at the right corner of the screen) (Hint #2: Thats the Windows message alerting the user that a firewall is not running)
Other fun firewall notices:
http://www.veracode.com/blog/?p=80
-Michael Coates