I concur. With 4.0, C# and the platform has really matured from its origins as a Java clone. All the work to add dynamic language support in the CLR has made C# very enjoyable to code in. The addition of ASP.NET MVC and Razor were both long overdue, and highlights Microsoft's awareness that it now competes more with Ruby and Python than Java.
I hope the departure of the Gu doesn't slow down this progress or shift it in the wrong direction.