We have a lot of really smart people at Microsoft, but among those there are a handful who are the most knowledgeable and the most helpful, the go-to people upon whom I can reliably depend for accurate and detailed answers to rarely-asked or never-before-asked questions. In the realm of all things Internet Explorer, that person for me is Eric Lawrence, the author of (among many things) the Fiddler web debugging utility and the IEInternals blog. Therefore, I was excited when I heard he had written a review of Mark Russinovich’s and my Sysinternals book, and absolutely thrilled that he liked it. He didn’t just skim the book either – he read it from cover to cover and experimented with the utilities along the way. Thanks, Eric!