Thanks to everyone for coming and for all the great questions!
Original MVC application: ProductManager_Start.zip
MVC Application with embedded Silverlight 2: ProductManager.zip
Silverlight 3/.NET RIA Services version: ProductManagerRIA.zip
All demos use the AdventureWorks DB and are configured to point to SQLExpress. Remember that the VS tools for Silverlight 3 can’t be installed with the tools for Silverlight 2 but the Blend 3 Preview can be.