Who was my favorite high school teacher and why.....

As a high school mathematics teacher, not only am I interested in the students learning the material, but also in building relationships with the students.  Years later, I would like for my students to remember me, first of all, for the relationship that we built, and secondly, something or things they learned in my class that they still remember.

           Parents can have a profound impact on their children based upon their own experiences in school.  They share their attitudes and beliefs about every subject with their children, which affects their childrens attitude and beliefs.
With this in mind,  I would like to know who your favorite teacher was in high school and why?

What was it about that particular teacher that made them stand out above all other teachers?  Did it change your perspective about that particular class?