I might not have finished my Computer Science degree a few years ago if it wasn't due to Dr Z (as we called him at the time). I was required to take Linear Alg

I might not have finished my Computer Science degree a few years ago if it wasn't due to Dr Z (as we called him at the time). I was required to take Linear Algebra to satisfy the requirements for the B.S. in Computer Science, but I simply could not get interested in the course. I had attempted to take this course 3 times previously, but could not succeed. Twice, I withdrew from the course before the first exam. The third time, I missed that window and ended up failing the class. I just couldn't be motivated to study this boring subject. A flaw of mine, as I've discovered. But in my 4th attempt, it was taught by Dr. Z, and it was completely different. His passion for mathematics (and more importantly, teaching) was infectious. This was completely different than my experience with some other professors in the Math and CS departments. I never got a feeling that Dr. Z was "wasting" his time on this 200-level course when he could be doing much more important research. I easily got an A, and with that, satisfied all the math and CS requirements for my degree. Years later, I remember a lot more about that class than, say, Calculus.