Atlas of Human Anatomy for the Artist is a wonderful anatomy book in my opinion with very nice, clean, and detailed illustrations of the body parts within it. It makes a very good reference if you're trying to get a really good idea of body parts, because it will show and label every muscle and bone in your body
. I wouldn't call it a "how to draw book", but in my opinion, the only way to learn to draw is to draw anyway, so you shouldn't be using a book to tell you how to do that.
Also, just to throw in my 2 cents about McCloud, I really don't like him. He works primarily upon his own hype and most of his rantings are heavy on the "Experimental bullshit" side. Two things I specifically remember from his site was a big rant on micropayments (which had a plethora of holes in his logic, some of you may remember an old Penny-Arcade comic about it), as well as a thing about panelling on the web, where he said a lot of things were possible and should be done, but in reality he was breaking tons of rules for usability in web-design, while saying some really simple bullshit like "you can have the reader scroll left, right, up, down!" .... NO SHIT SHERLOCK! IT'S A WEB PAGE! Any idiot can see that a webpage does not have the same physical restrictions as a physical page. If I want advice on anatomy or story I'll go to the experts in those fields, if I wanna know how to bullshit my way into getting published I'll go look at Scott McCloud's work, since he's clearly an expert on at least that.