Model-View-ViewModel In Silverlight 2 Apps
http://msdn.microsoft.com/en-us/magazine/dd458800.aspx

Architecting Silverlight 4 with RIA Services, MEF and MVVM – Part 1
http://wildermuth.com/2009/12/15/Architecting_Silverlight_4_with_RIA_Services_MEF_and_MVVM_-_Part_1

A Sample Silverlight 4 Application Using MEF, MVVM, and WCF RIA Services – Part 1
http://www.codeproject.com/KB/silverlight/IssueVisionForSilverlight.aspx

ARCast.TV – Rocky Lhotka on Patterns, Architecture and MVVM
http://channel9.msdn.com/Shows/ARCast.TV/ARCastTV-Rocky-Lhotka-on-Patterns-Architecture-and-MVVM

Northeast Roadshow: RIA Window – MVVM, Silverlight, and Expression Blend
http://channel9.msdn.com/Blogs/dpeeast/Northeast-Roadshow-RIA-Window-MVVM-Silverlight-and-Expression-Blend