Overall, he is a decent professor who cares about student, one who is willing to help, especially during office hours.
The downside of him is he tries very hard to explain stuff, and it is practically hard to understand his explanations, as he sometimes dig into digger stuff that are not supposed to covered in the materials of 33B (i.e. Duhamel's Principle), and sometimes his explanations would be very good for someone who has already taken Analysis (which unfortunately only exists in Upper Division classes and 33B is the pre-requisite to many)

But do not be scared, he is a very good person and a very good professor, and you can practically see his efforts in trying to make you understand about everything.
I've had times when I don't understand a word in half of the lectures, but in the end it was actually fine because you can always read the textbook and/or ask your TA.

p.s. The professor has a good taste in fashion, judging by his selection of clothes, and he really is a nice guy if you try to talk to him.

Also, a special thanks to Zachary Smith, the TA I had, who covered everything one needs to know with considerable thoroughness and clearness in merely 8 discussion sections (There were actually 10 discussio sections over the 10 weeks, but 2 of them are excluded because they were midterm explanations). Try not to miss his discussion sections if you have him as TA, because you would be in luck.

Professor Leger is amazing!! His classes and the way he presents the material is so clear that most of the time people don't need any extra clarification. He very rarely makes computational mistakes in his calculations, which is more than I can say for every other math professor I've had at UCLA, and he always makes sure to link back to the main idea so you don't get lost and forget what you were trying to find in the first place. He also relates all the concepts to real-life examples which helps tremendously with comprehension, and the small jokes he sometimes sprinkles into his lectures are perfect to keep the class atmosphere light. His homeworks are frequent but straight forward although his tests are a level above the homework. Unfortunately, he doesn't bruincast or post his notes online but his classes are really worth going to and the notes you take will be the clearest ones, trust me. Plus, you also miss his spectacular sense of fashion and his amazing shoe game if you don't go. His office hours are really pleasant because he'll always take time and not make anyone feel stupid. Prof Leger is honestly one of the best professor's I've had at UCLA.

Easy class, cool professor with a good style. Sometimes he goes over proofs in class that go way over (an estimated) 95% of the class's head. Like when he proved that a vector space (over C) is the direct sum of its generalized eigenspaces. But other than that, the class was straightforward: short homeworks, clear lectures, and exams that are predictable for the most part.
My only complaint is that the class could have been more challenging.
Take the class with Flavien if you can.

Having taken all of the lower-div math courses except for 31A and 31B, 33B seems to be, most decidedly, the easiest. The material is thus a little boring at times, but Leger made it interesting in his own way. He wasn't the most engaging of lecturers, but he explained topics really well and made the subject a little more interesting than it might have been otherwise. I would recommend Leger as a professor, not only because of his teaching style, but also because of his innocent jokes and his fashionable attire.

Lectures not super interesting, but helpful enough, and as a bonus, he sometimes tells sick jokes during the lectures. Homework is absolutely light and doable, so do the midterms and the final. One thing is that his exams only have 20 points in total for midterms and 40 total for final, so if you lose 1 point, it means more than you feel. But also the graders tend to take points down by 0.5, so one tiny mistake will not affect you that much. After all, above average professor. Take him if your interest in the material don't depend on the lecturer's jokes 8*)

If possible, I would recommend taking another professor, however, if you're stuck with him, it's not the worst thing in the world. He's a very smart professor (obviously if he's here at UCLA) but his lectures aren't that engaging, I did most of my learning on my own just by reading the book. Around 50% of the class showed up for his lectures. My TA was instrumental in helping me understand some harder topics.

The nice thing was the homework though, it wasn't too time-consuming and if you know how to do the homework, you should be fine for the exams.

Professor Leger's lectures are very clear and he explains concepts well. To the greatest extent possible in an undergrad lower division math class, he provides motivation/simple proofs for the topics covered.
Homework is quite simple and not very time consuming. It's assigned straight from the textbook and is based on that week's lectures. You can easily do them by reading the relevant chapters of the textbook.
If you read the textbook before doing the homeworks, the midterms and final are really easy as they are pretty much the same as the homework.
On a lighter note, his French accent (which is easy to understand) and mannerisms remind you of a typical math professor. Overall, I enjoyed the class.