I actually took EEB 121 with Professor Brunk, but that wasn't an option on the dropdown menu. He was a pretty easy-going, humorous guy. Exams were fair, although the final is more difficult than the midterm. The book's definitely not necessary, as I never opened mine. Avoid enrolling in David Gold's section if possible. He made it clear that we were not a priority, and wasn't helpful at all. There are 100 points reserved for discussion, and he explicitly told us that discussion was voluntary and he'd assign three assignments throughout the quarter, which would account for the 100 points. He ended up assigning one assignment, and making the final discussion mandatory without informing any of us, except for those who attended regularly. So basically the ones who knew the material were penalized for not attending discussion when he told us NOT to come!