I bought this book over a year ago, with about 8 other books, and had ignored it. I picked this off my shelf last week, while on a support call, and took it with me while on a short personal trip.
I learned so much from this little book about the improvements in .Net 2.0 for debugging, and how to use the tools in visual studio - in extremely productive ways, I would recommend you buy this book immediately and use it for the rest of your programming career!
I found the book extremly well written and it had me laughing and reading it out loud to non-computer people for the great humour that John Robbins put within the pages.
I have a problem at work, dealing with the clipboard and the need to have a static thread to use the functions, and on page 119 he cites that exact issue and how he resolved it.
I have not finished the book, - I am almost half way. The part about setting up a Symbol server went a bit beyond what I think I can do within my employers site, and it sounds like a lot of work, however his point is that the mini dumps that a user can send you can be loaded and you can pinpoint the exception with all of the data values, and call stack that was loaded at the time - which allows you to see what the problem was. Potentially saving hundreds of hours!
I also noted that there were a few links in the book pointing to the gotdotnet website,which I know has been reduced to very few remaining links (Microsoft has abandoned) - so some of this book (a few lines at this point) is going out of date due to the reliance on some web links still being there.
I personally find the parts about FxCop and the Code Coverage in VS 2005 as a good piece of instruction on establishing your own code rules - and if you want to have standards enforced - it will help you see how you can improve on your code. If you are avoiding improving your standards, then you can skip that - I would encourage you to learn from it rather than skip it.
If you are working in .Net 2.0 (or higher) as a developer - I cannot recommend this book highly enough. I had kind of ignored it on my shelf, and that will not be the case from now on. It has started to travel with me. I read it every chance I get so I can finish it and benefit from the incredibly practical examples and enjoyment of really great writing, that can spice up the book with real humour that everyone can understand. Outstanding!