Popular science books

Jennifer Ouellette put together a great list of pop-science books. Of course wikipedia has an extensive list of notable science books as well. My three favourite books are:

• The Feynman Lectures on Physics – Richard Phillips Feynman
• Philosophical Investigations (German: Philosophische Untersuchungen) – Ludwig Wittgenstein
• Gödel, Escher, Bach: an Eternal Golden Braid (commonly GEB) – Douglas Hofstadter