Complete Artist's Manual
Inspite its subtitle - The Definitive Guide to Materials and Techniques for Painting and Drawing - the book is mainly about painting, and even there it can't be considered a definitive guide. Nevertheless, it's a good reference for beginners and intermediates alike, for seasoned artists I'm not so sure.
The book is inspiring, well written, full of practical information, relevant not only to oil painters, like the author, but also to artists (or wannabe artists!) using any other painting mediuns. I highly recommend it, specialy to the ones interested in learning more about the process and advantages of working small.
Drawing on the Right Side of the Brain, 4th Edition
Overall it's an interesting book, mainly if you ignore the last two chapters (Using Your New Perceptual Skills for Creative Problem Solving and Drawing on the Artist in You), and I recommend it to beginners who want something a little more advanced than the typical step-by-step books.
The Art of Urban Sketching
There are lots of new books about urban sketching being published every year, if you get only one, this should be it. It is inspirational and a excellent showcase of the wide range of techniques used by the community.
You Can Draw in 30 Days
Highly recommended o complete beginners that, after gaining the necessary confidence and learning the basics, can then advance to more complete books like Drawing for the Absolute and Utter Beginner, Keys to Drawing or Drawing on the Right Side of the Brain.
See also my list of recommended art books.