An excellent treatise on IDisposable by Chris Patterson - http://lostechies.com/chrispatterson/2012/11/29/idisposable-done-right/

How to verify calls to Stubs in the Microsoft.Fakes framework http://www.peterprovost.org//blog/2012/11/29/visual-studio-2012-fakes-part-3

Awesome new TypeInfo API http://visualstudiomagazine.com/articles/2012/11/29/typeinfo-reflection.aspx

I love the Rooms feature of my WP8, but my wife has a WP7. Here are some ways we can bridge the gap http://blogs.windows.com/windows_phone/b/windowsphone/archive/2012/11/29/tips-for-using-rooms-on-other-phones.aspx