Defcon was a blast. I met a bunch of cool people and got to hang out with some old friends. fednaught, a Capture the Flag team, got second place despite my help.
My favorite talks were Hacking Malware: Offence is the New Defence by Danny Quist and Valsmith and Exploit Writing Using Injectable Virtual Machines by Wes Brown and another fellow from the same organization. The latter because James and I were discussing what we would need in order to be prepared for next year's CtF only moments before going into this presentation and hearing that it had already been written.