Some beautiful visualization talks were the highlight for me of day 2. I am suspicious about visualization for creating scientific results, although I think good visualization is essential in vetting data and procedures. In the former I think I differ from most of the ADASS crowd.
Speaking of which, we were strongly advised to interface Astrometry.net with World Wide Telescope (when Microsoft releases the product and an API) and the VirGO interface (which is built on Stellarium, a nice open-source planetarium). I hope we will do both in short order, along with Google Sky.