Disclaimer, I am not, nor ever have been, a teacher and I posted on the horrible teacher thread.
Mine are MissP. who gently and consistently helped me catch up in spelling because I was short sighted, bilingual and had moved countries. She was the teacher after my horrible teacher experience.
In high school was the 2 male english teachers who promoted a love of reading and lending of school copies of books not on the curriculum if they thought you'd like them.
Our H.E. teacher who , in breaktime, taught us how to manage a household budget and her famous "1001 cheap recipies for students" that she would tell us.
And finally the deputy head, an amazing teacher who stuck up fearlessly for her students.