The Drupal 8 multilingual team is really great in spreading know-how on the new things in the upcoming version, so we had our session (1h) and workshop (2h) recordings published and widely available.
Years ago now, the Drupal community adopted Git as a version control system to replace CVS. That move has helped development since the distributed nature of Git allows better tracking of work privately before uploading a patch to drupal.org.
Our first foray into public during Drupalcon Los Angeles. Bob, Jason and Mark are live interviewing anyone who showed up to our BOF (Birds of a Feather) and gave away fancy Weekly Drop T-shirts.