I'm sure many of us have books like these. Maybe they are text books, maybe pop-sci books, but often something in between. And whatever they are, they're so good that we don't just read them for reference. This evening I once again pulled Kip Thorne's "Black Holes and Time Warps" off the shelf and reread the first couple chapters. I just find it a delightful read, and it always takes me back to when I was a high school student just starting to learn about physics. I realized I have a handful of books like this, but I bet there are many gems out there I haven't come across. So I thought I'd list my favorites, and see what others have dogeared over the years, too! Mine: -Black Holes and Time Warps -Flatland (I'd heard it summarized so many times, I almost didn't read the book... but I'm glad I did!) -Mr. Tompkins -Physics for Entertainment, by Yakov Perelman (I've never seen a better and more wonderfully Russian collection of puzzles and musings) How about you?