Here are some good articles in DNK for this month:
http://blogs.dotnetkicks.com/best-of-dnk/2011/11/02/best-net-articles-of-october-2011-fresh-off-the-presses/

I have been working on an interesting assignment involving Exchange web services (EWS). If you want to get started using EWS Managed API SDK, here is how you can:
http://blogs.dotnetkicks.com/vijayst/2011/11/getting-started-with-ews-managed-api-sdk/

I have been working on Silverlight and MVVM for the past few weeks. PRISM is an implementation of MVVM pattern. Here is the project in Codeplex:
http://compositewpf.codeplex.com/