The Zombie Autopsies - written by some doctor, it's written mostly as a journal 1st hand account from a doctor on a doomed island doing research on zombies for the UN (in the near future). and then have stuff from like the UN and CDC about the historical progression of the disease, the official WHO classification and ethics guidelines when dealing with the zombies, etc. it gets really into the medical aspects of being a zombie, so if you're kind of a nerd who likes overly technical discussions about completely made up stuff, you'd probably like it. i know i did.