Check out this video demonstration of how to use the SharePoint 2010 and WCF Data Services API with Microsoft Silverlight. WCF Data Services is also know as ADO.NET Data Services and is an easy way to implement REST in the .NET Framework.

To view the video in full screen mode (recommended), press the “F” key on your keyboard or hover over the lower left of the player and click on full screen icon as shown in the following image:

Silverlight integration into SharePoint 2010 is covered in our SharePoint 2010 Application Development class.