On Wednesday, I went to the first meetup of the OLPC Learning Club. It had a great turnout with the official count being at 42 people.(however, some people came after that count was taken.) I talked with many great people from both the enthusiast and volunteer expert sides of things.
Pictures can be found here:http://www.flickr.com/photos/tags/olpclcdc/ (my flickr account is mattva17a)