The nice people at NYCBUG invited me to speak on cryptography on 05-Sept-2007. About 20 (?) people showed up ranging from people who had no exposure to crypto to some people who worked on VPNs, developers to sysadmins -- all types with lots of excellent questions. Thanks everyone for coming -- it was really great to meet you.
I reworked the slides a bit based on feedback from that day and posted them here.
What's my problem? Why didn't I take any photos? Why didn't I post here before I spoke? Oh well. Next time! There are rumors I'll do something similar for the NYC php group.