Inspiring Art Books

On the Painting Forum Frank has started a list of favourite and most inpiring art books. His are:
• "Two Worlds of Andrew Wyeth: A conversation with Andrew Wyeth" by Thomas Hoving.
• "Interpreting Cezanne" by Sidney Geist
• "Renoir, My Father" by Jean Renoir
Mine would include "Art and Fear" (bet that's no surprise to many of you) and the catalogues I've got on the paintings of Lucian Freud and Vincent van Gogh.
What are your favourites? Add them to the list...