David Hayden (a C# MVP) recently posted a good review of the FDG. Here is one notable comments:
Although I was originally worried that it would be more theoretical in nature and mainly apply only to architect types, such is not the case. It is a great combination of 1) best practices concerning fundamental API and class design; 2) great tutorials on .NET framework classes and the when, why, and how to use them; and 3) common design patterns for better manageability and extensibility of your frameworks.
The thanks for this comment has to go to
Oh, and thank you