So it's looking likely that next year I'll be teaching the newly wildly popular AP Physics C. This will be a chance to relive old memories.
In addition, an AP Physics B class will be offered to seniors for the first time in several years, so it will be important to clarify the distinction between the two. Some of the differences are obvious: B is all about breadth, C is about depth. B is a dizzying tour through a wide range of physics topics (though it will probably be much less dizzying for students who have already had a year of physics), while C focuses only on mechanics and E&M, going deeper into those two areas, particularly by using calculus throughout the course.
C is generally understood to be a more advanced course. However, after starting to read the Feynman Lectures (one of my projects for the summer), I have decided to frame it as a more fundamental physics course (albeit only for students with sufficient background in physics and math). In this course, students will master all the roots of classical physics. Everything in Physics B (except for the atomic physics at the end of the year) can in theory be derived from Physics C (the actual history of physics be damned!): conservation of energy and momentum in a system of particles leads to PV=nRT when averaged over 10^23 particles; Maxwell's Equations lead via some convoluted path to the simplicity of Snell's Law and the lens equation. That's how I want to introduce the course to the students on the first day.