Christian does a great job of focusing on patterns from a .NET perspective. He explores some very practical patterns and provides .NET specific guidance and code for implementations .
I particularly liked the bubble-up pattern for exception handling as I am a firm believer in top-level exception management. He looks at a broad set of patterns from the presentation tier to the data tier , and does a great job of focusing on XML and XML Web services throughout.
The best part of the book is the fact that Christian's insights come from a real-world experience with patterns and .NET. That's readily apparent by the way he brings it all together in the section on applying patterns to commercial products. He offers something to everyone: