Up until recently, my favorite had been Brad Fallons recent release. Sure, it was full of advertising for his software, but true to viral marketing principals, he still had some good stuff in there.
Last week I bought a copy of Aaron Wall’s SEO Book. It was one of the few I hadn’t got, so I figured might as well add it to the library. I am glad I did, it had alot of current information in it that is quite new, techniques that have developed in the last 12 months. Anyway, I definately recommend it. If you don’t get the book, you should at least check out Aaron’s blog