Steve is an excellent lecturer who really cares that we understand the material. He makes jokes to keep us awake and tries different techniques to increase our understanding. His midterm and final problems are interesting and challenging at the same time. I highly recommend taking him.

I took Math 61 with Professor Butler last quarter (Fall 08)--and I have to say, it was one of the best math classes I have ever taken at UCLA. Professor Butler is very organized in lectures, clearly knows the topic really well, and is really funny in lectures. Sure, sometimes the lectures could get a bit dry, but hey, it's math. If Professor Butler is teaching any of your required courses, I strongly recommend him as your top choice.