Morales is easily the best professor (let alone the best physics professor) I have had at UCLA. His lectures are clear and easy to follow, and he explains all the notation he uses as he's working a problem (which I found is a HUGE issue with other profs). The material isn't easy, but he explains things in an incredibly intuitive way and answers in-class questions completely and with little ambiguity. His homeworks are pretty tough and lengthy, but the material he tests on is much more straightforward. I went to one of his office hours in the last 15 or so minutes to ask a question, and he stayed with me for an hour after to make sure I really understood it. He cares a ton about student learning, and that combined with a mastery of the material makes him an excellent upper div physics professor. Take him if you have the chance!!

Very nice guy. Always available and very accomodating. I had him for Physics 110A, and he was very clear and articulate about concepts in electro- and magnetostatics. I came to his office hours once, and he pretty much explained all of physics to me from a small example that had sparked my curiosity. Very good teacher.