The fourth edition of Microsoft Windows Internals (formerly known as Inside Windows) is available in the stores:
Dave Solomon and Mark Russinovich have done a pretty good job at describing the nuts and bolts of the Windows kernel. It doesn't matter if you are a Windows or Linux programmer. This book is absolutely needed if you want to know more details about how the windows kernel works... And these details can be quite interesting!
P.S. Among the things that changed since the previous edition - check out the renewed Storage chapter, or the section describing the new Heap manager...