Community: I've started to do pairwise code reviews with the authors of pull requests with significant amounts of changes. I think this is a good idea IMHO for us all as it not only lets the author explain to someone else what they *think* they have coded, but also lets the reviewer better understand their patch set. Its also a good way for us to have a more casual/less formal interaction and learn from each other a bit. I've done this twice now and I think the results have been very positive. If people have comments/suggestions please post feedback.
Cheers, --Tom