CASCON is one of my favourite annual events. I've been to every one! There are so many smart people here to interact with and learn from. The workshops are fantastic! Monday, I attended the Development Intelligence workshop which is of great interest to me, particularly how the connections among people in development projects can help improve productivity and work for software developers.
I'm impressed with the Twitter and Facebook discussion about CASCON. I just found out via Twitter that the high school where my sister teaches is sending a team to the High School Programming Contest at CASCON! I recommend following CASon Twitter.