I've ordered this book: Octopus!: The Most Mysterious Creature in the Sea, by Katherine Harmon Courage. Katie was a colleague of mine at Scientific American; I fact checked a number of her news pieces and found my checking was generally superfluous. I'm sure this book will be of similarly high standards, and the subject matter is of high potential, being as multifaceted as it is multi-legged.*
UPDATE: Added exclamation point to book title in headline.
* UPDATE 12/2: One of the very first things you learn in the book is that an octopus' limbs are arms, not legs.