http://blogs.msdn.com/geekspeak/archive/2009/06/12/resources-for-geekspeak-mvvm-patterns-with-christopher-bennage-and-rob-eisenberg.aspxKudos to Christopher and Rob for helping bring our geekSpeak attendees up to speed on the evolution of UI patterns. If you missed this geekSpeak you can catch a recording here . Below are links/resources mentioned on the show: WPF Architectural Patternsen-USCommunityServer 2.1 SP1 (Build: 61025.2)