My, "SQL Azure: Under the hood" talk is available for viewing now here. During the talk, I referred to GopalK's earlier under the hood talk in mine so I've attached a link to this here for those that are interested.
You can also find some of the other talks for SQL Azure here as well:
Development Best Practices and Patterns for Using Microsoft SQL Azure Databases
SQL Azure Database: Present and Future
Scaling out Web Applications with Microsoft SQL Azure Databases
The Future of Database Development with SQL Azure
Hope you find them interesting