To be honest, I do not think that this was much of a Deep Dive. It was more like a technical overview of the new features of Virtual Earth 6.2. However I still think it was a good session.
He also showed a demo where he used the new spatial data types in SQL2008 to show aggregated information based on geographical location. This was indeed an interesting demo, later when I talked to him he mentioned that a few report engine developers were working on ways to develop report- and BI tools for aggregation over geographical areas.