To start with, for beginners, Betty Edward's 'Drawing on the Right Side of the Brain' is pretty good general material, and great exercises to practice.
For Anatomy: George Bridgman, Burne Hogarth (For the really exaggerated stuff), Michael Hampton, Andrew Loomis and... I want to say Jeno Barcsay's little book on anatomy, but I haven't taken a look at it since I've gotten better. I've been looking for it forever since I forgot the author's name, and just found it again recently and signed it out. Will be picking it up on Wednesday, so I can provide updates on that.
There's also an anatomy atlas by Sarah Simble if you want really a specific, and thorough breakdown.
'Techniques of the Great Masters' has always had rave reviews-- I haven't gotten around to reading it myself though:
http://www.amazon.com/Techniques-Great-M...0890098794
And for a book -about- art, I've heard a lot about, "The Art Spirit" by Robert Henri.
Also, I think Jan (?) recommended "How to Render," By Scott Robertson to me, which I'm still planning to check out.