From my experience in first-year Eng:
Dr. Aaron Childs (in case it wasn't obvious at this point)
Dr. Hatem Zurob
From what I've seen:
Dr. Jonathan Yazinski. This man is absolutely fantastic, and I am severely disappointed no one's mentioned him in this thread yet. He teaches Engineering Math IV (2ZZ3) next term, but I went to his Stats 1L03 lecture this term to check him out. I ended up going to more than half the ones left, just because he was so entertaining. I could also tell that he was very concerned about the effectiveness of his teaching, always asking the students if he was going too fast or too slow.
Dr. Joey Kish seems like a good person from the events I've seen him at, but I haven't been to any of his lectures yet. Same goes for Dr. Provatas. Both, plus Dr. Zurob, are teaching Materials 1M03 next term though, so as far as I'm concerned, it's a win/win/win situation for anyone in first-year Eng.
Cameron Churchhill is also a great, enthusiastic lecturer. It's a shame that only a handful of students in Society, B. Tech, or Civ Eng get to appreciate him though.