C Sharp 3.0 Design Patterns

This is a good rehash of the Gang of Four patterns, reworked in C# 3.0. The book's fairly concise and most patterns are clearly laid out with a simplistic example to demonstrate the basics of the patterns followed by a more detailed example in a semi-real world implementation. The articles are nicely done, there are a good set of exercises about each pattern, and there are some good comparisons between similar patterns. As an example, there's a bit comparing the Builder and Abstract Factory which details that a Builder is concerned with how things are built while an Abstract Factory is concerned with what is built.