(This doesn't actually answer the question asked, but it IS what came to mind.)
Well, there's Mrs. Love, my English teacher in Australia that insisted I was making my capital cursive 'G's wrong. My last name just happened to start with G and... yeah, I wasn't backing down on that.
And there was that teacher (name totally forgotten) in 6th or 7th grade that was really upset that, when asked what my favorite part of a book I had just read was, I listed the part where the main character mercy-killed his friend. I am sure she thought I was "not quite right in the head", but that was simply the first time a book had made me CRY. I still love pathos in stories.