I recently bought the book Visual Studio Hacks by James Avery (published by O'reilly). It is a great collection on tips & tricks on Visual Studio 2003. It even includes a set of tips for the upcoming Visual Studio 2005. I was also happy to see that he recomments most of the 3rd party tools I use as well (e.g. Ghostdoc, Resharper). If you really want to get the most out of your development environment, check out that book.