My best math teacher was a lady by the name of Kathy Stover. Had her for Algebra II as a junior in high school. She was the one and only good math teacher I had. I took Calculus l,II, and III as well as ordinary differential equations in my undergrad years. I am now in graduate school for a Masters in Chemical engineering and am learning about partial differential equations as well as tensor mathematics on my own. I'm really enjoying it and in the Internet age, what with YouTube and other online resources I am starting to feel like I am actually learning mathematics for the first time since my junior year in high school.
I guess what I'm trying to say is that truly good and inspiring math teachers are as rare as hens teeth. If you've had a truly good teacher count your blessings.
