Today I attended http://retroruby.org, a great un-conference in Arlington. I got my toehold in the local Ruby community at the Arlington meetup, and was happy to visit with lots of familiar people. I didn't meet any new people, though that was mostly because it was easy to spend time catching up.
Next time I want to jump in a bit stronger on the new-dev track, maybe walk through some hands-on exercises or do a group activity (Randori).
My favorite, besides talking to people, was the lightning talks. These have a bit more technical depth and include some code getting projected, which I love. I gave a quick this-thing-exists talk on http://reactrb.org.
In the hallway track I also got to preach a bit about Module Level Polyglot :)