Yesterday I headed into the city for the DC Doc Sprint. We had some difficulties because the library had assigned us a room which didn't have wi-fi, but we migrated up to lobby of the Black Studies section and got going there.
My focus was on checking the PHP snippets in the handbook for compliance with formating standards. I used the Coder module with a stub module I wrote to do the checking. Since Coder can't check arbitrary code, I copied the snippets from the documentation pages into my stub module and ran Coder against that module. It worked well enough, but it would have helped a lot if Coder had an interface to allow someone to input arbitrary code for it to test. I've put in a feature request on the Coder issue queue. Maybe it'll make the grade and get implemented.
All in all, the event wasn't as interactive as I had hoped (I had gone as much for the networking as the actual work, being in the common area of the library just didn't support much conversation I felt) but definitely worthwhile. I got a crash course in the Drupal coding standard, learned about the documentation editing and creation process, and met some good people. I'll definitely be going again.