Now that the book is officially released, I can publically announce that I contributed about 80 pages to the newly released Windows Server® 2008 Administrator's Companion.
I wrote a complete chapter on PowerShell aimed mostly as a quick overview/introduction for administrators that are new to PowerShell.
Key topics are reviewed, and then some examples are provided using the concepts discussed.
Many thanks for Charlie Russel for the opportunity! He also helped out a lot with the editing process, writing the introduction section, and valuable input throughout the chapter.