What's the best teacher you'veever had, and why?

My old science teacher was a legend, he made a cowboy game using a Doom 3 engine, he let you do whatever you want, so long as you listen for like, 5 minutes, he had a mutual hate for 2 of my enemies, whom he embarressed often. But he never got fired because he was only like this because we were top set, apparently he was strict on lower sets.