I recieved Anabolics 2005 a while back, and it is chock full of useful information on just about everything out there. Having an extensive educational background in chemistry and physics, I would have hoped for a bit more depth on the cellular level functions and effects, but overall, it is a great book. It will give you a lot of valuable information.
Satch, can you suggest a book that goes into a bit more technical detail?
Zig