What's the coolest thing you as a computer security geek have seen recently?

Download LogParser 2.2 from http://www.microsoft.com/downloads/details.aspx?familyid=890cd06babf8-4c25-91b2-f8d975cf8c07&displaylang=en, and at a command line, type

logparser
  "select * from security"
  -o:neuroview

If you're a fan of the Matrix movies, you'll find neuroview a particularly fun output format for perusing your Security event log. For more information about LogParser, you can go to "The Unofficial LogParser Support Site" at http://www.logparser.com.