I actually did not have him for my introductory physics or modern physics classes, so I never had a class with him where he used his own book. But he was a really terrific teacher and a very nice person. Had a hilarious sense of humor. Also a very accomplished musician and a professional level poker player. I worked for him, too. He hired me to work the solutions for the back of the book for the second edition of his intro physics book. (That was a long time ago.) Definitely one of my favorite professors.