FREE Security Exploit Matrix poster from Tripwire
 

These are pretty cool posters. First poster shows the security attack matrix from attacker's point of view and the second one shows it from defender's point of view.

I've previously gotten the penguin poster from Tripwire, but these look a lot more interesting.

And perfect timing too... I'm in the process of setting up new networks at my company's new building.

http://www.tripwire.com/literature/poster/