Tom Moore's Six Ideas That Shaped Physics is one of my favorites. It upends the traditional order of topics in an intro physics class: it starts with conservati

Tom Moore's Six Ideas That Shaped Physics is one of my favorites. It upends the traditional order of topics in an intro physics class: it starts with conservation laws rather than F=ma, both because they're more fundamental (you're not going to use F=ma in quantum mechanics, but you'll sure use energy) and because students taking calculus concurrently will have learned about derivatives there by the time you get to acceleration and really need to start understanding them. Lots of other pedagogically novel features, too. Another favorite of mine that might be especially interesting to the HN crowd is Chabay and Sherwood's Matter and Interactions text. One key feature is its tight integration of simulations using "VPython", which students start to use within the first few weeks of class. That makes it viable to have students study realistic forces rather than just the simplest cases. (E.g. adding air resistance to projectile motion is just one more line of code, rather than requiring a course in differential equations.) That also makes it more reasonable for their book to give true equations from the start (like the equation for relativistic momentum rather than just p=mv) and then state the more familiar forms as approximations. Randall Knight's Physics for Scientists and Engineers is a much more standard text than those two, but it's still worlds better than most traditional texts that I've used: it changes the old standards in smaller ways, but still incorporating lots of research-based improvements. (Knight's little book /Five Easy Lessons: Strategies for Successful Physics Teaching/ was a great introduction to Physics Education Research for me when I first started teaching, too.) Eric Mazur, one of the real leaders of the Physics Education Research community, wrote a book not long ago called /Principles and Practice of Physics/. I haven't had a chance to really go through it in detail yet to get a feel for everything that makes it unique (one big structural change from tradition is that he focuses on students getting rock solid on 1D physics before introducing the complications of vectors), but he's such an expert in this stuff that I wouldn't want to leave his book off of the list. (It's organized in a bit of a weird way, mind you.) I'm sure there are others that I haven't thought to list. Debora Katz has a new book that I just heard about that emphasizes case studies, for example. But yeah: almost any of these books are fundamentally different than the classics in some way, and worlds better in my opinion.