The Launch Pad has a number of picture-filled posts from their Silicon Valley Space TweetUp, including some personalities you might recognize. I'll just link to a couple posts; you can find the rest easily enough:
Will with one of the new Team members
Space TweetUp - The turnout was pretty spectacular--a very effective argument for the power of social networking. We had members of Google Lunar X PRIZE teams, Northrop Grumman Lunar Lander Challenge teams, NASA Ames staff, and a variety of other space friends who either live here or who were in town for our Summit, the AGU meeting, or the human-tended suborbital science meeting.
Pics from Silicon Valley Space Tweetup