Bartlett Publishing has put together several lists of books available from many various publishers which are essential reading for anyone interested in the topic. Check them out today!
You can view the articles from the blogs which preceded these at the following URLs:
I am posting this mostly so I remember it later on - this is a great article on UD about the relationship between taxonomy and the concept of common descent. The point is that what the nested hierarchy shows is specifically *not* Darwinian. Excellent post with excellent argumentation followed by an excellent discussion.