Browsing Silverlight Showcase page I found this SQL Server 2008 Overview Demo built using Silverlight:

 [quote]Microsoft SQL Server 2008 provides a trusted, productive, and intelligent data platform that enables you to run your most demanding mission critical applications, reduce time and cost of development and management of applications, and deliver actionable insight to your entire organization. This 7-minute video walks you through the feature enhancements available with SQL Server 2008. [/quote]

Do not expect a very technical content. Enjoy!