If, like me, you've read every paleo/primal book in the world except this one, time to get it. Bought it on iBooks today and it is fabulous. Packed full of great info, all written intelligently and well. I should've known, considering the Mark's Daily Apple site and blog is one of the best and most readable out there. Thanks, Mark Sisson!
(p.s. I was excited to see how long it is! More reading pleasure!)