This would be my top fifteen:
1.The Elegant Universe – Brian Greene – an excellent introduction to the fundamentals of Modern Physics.
2. Hyperspace – Michio Kaku - wonderful take on extra dimensions by a strong narrator.
3. The Ideas of Physics – Ernest Hutten - an oldie but a goldie – discusses key ideas that shaped the discipline.
4. Fearful Symmetry – A. Zee - Looks at the Beauty in Physics.
5. Physics of Immortality – Frank Tipler - a bit over the top but highly entertaining, nevertheless.
6. Theories of Everything – John Barrow - Low key but well written.
7. Feynman Lecture Series – Richard Feynman - A struggle for the layperson, but if you can get through a third of it, your effort will be rewarded.
8. The Trouble with Physics – Lee Smolin - an important critique of the groupthink that has worked its way into particle physics.
9. Physics – Douglas Giancoli - Doesn’t matter what the edition is; its treatment of classical physics is splendid.
10. The Flying circus of Physics – Jearl Walker – Challenging problems that force one to really think deeply about everyday physics.
11. Relativity Simply Explained – Martin Gardiner – Its title says it all.
12. The First Three Minutes: A Modern View of the Origin of the Universe – Steven Weinberg- Still one of the best treatments of the Big Bang.
13. The Constants of Nature – John Barrow – Delves into the details of these definitive constants that so encapsulate our universe.
14. Thirty Years that Shook Physics: The Story of Quantum Theory – Gamow is a great storyteller, and he didn’t disappoint with this useful read.
15. Fifty Physics Ideas – Joanne Baker – Lots of fun and really easy to navigate