I just got back from my trip to the inaugural ROSCon. Putting faces to names within the ROS community was a great experience. Beyond that, many of the sponsors brought in some hardware to play with!
My rosjava talk was well attended and the video is now up on YouTube. It's aimed at developers who are already familiar with both ROS and Java. After just a single year since its release, I was pleasantly surprised by the number of awesome projects using rosjava.
With a 1.0 release of rosjava nearing, it is becoming easier to use. I hope that improves traction and I can't wait to see what people start doing with it this year.