For the past five years, PGCon has hosted an invitation-only developer meeting before the official conference. I found it interesting to look at the previous group photos and meeting notes:
Images from 2012 and 2010 have all people identified, though when you click on the image to enlarge it, you lose the identifications. Year 2011 is an extra-wide version. In 2008, it seems we didn't take a group picture, so I have chosen four images that show most people.