David Ferrabee, a colleague of mine based in our London office, has just published a book called People Power: Or How Organisations Should Make Life Interesting for Employees available for order here. The Lulu blurb calls it "An easy to read guide to internal communications and change management from someone who really knows."
I haven't yet read the book (but will immediately) so I can't comment on it. However, having followed David's blog religiously for the past two years or so I can say he is not only a thought leader in employee and change communication but also a creative, energetic and inviting writer.
I guarantee his book is likely to be just as ingenious and imaginative.