Brian Harvey's explanations are quite clear - I took him for the introductory CS class at Berkeley. He certainly has a firm grasp of what he's teaching (as any

Brian Harvey's explanations are quite clear - I took him for the introductory CS class at Berkeley. He certainly has a firm grasp of what he's teaching (as any professor at that level should), but he's also very personable, and puts effort into making himself available to students. He also emphasizes UI and carefully thought out programs, even at the (intro CS) scheme level.