If you are in the area (or even if you aren't, I know of people traveling a pretty good distance to get here) and you haven't got your ticket for Bsides DE yet, you may want to get on it.
The first round of tickets are all gone, and there are only 40 left of the extension tickets.
I'm speaking at 1:00, right after lunch. See the speaker's schedule here. But anyway, if you haven't got your tickets yet, you might want to hurry up and grab them from here. Cost? Free.