Hot off the press is this little gem, How to Hang a Picture, lovingly written, illustrated, and designed by my friends Suzanne LaGasa and Jay Sacher. This book covers all aspects of displaying art in your home, from the practical to the aesthetic, and does so in a visually rich and approachable way. Pages and pages of detailed watercolors (including one of the space just outside our kitchen, shown in the second image down!) make this book not only useful, but a covetable work of art in itself. Also, how beautiful are those endsheets?
Also, take a read through this interesting interview with the author.