Unger is a pretty good, funny professor that gives clear lectures. Reasonable weekly problem sets. The tests are mostly easy, with a couple problems that are too difficult. Easy to get a B, hard to get an A.

Discussions not mandatory.

During lecture, he explains the general ideas and works through some examples. Sometimes, you may need to read some extra stuff he didn't cover in class to do the homework. He replies promptly to questions asked on the CCLE forum, which is nice.

His tests were relatively straightforward. The problems were about the same difficulty as those encountered in the homework.

Overall, I'd say he's a pretty good professor. His lectures are worth listening to, and he taught us what we needed to know.