Will you tell me about that one amazing college professor that you remember to this day?

Now that I’m teaching at a college as an adjunct professor, one of my lifelong dreams has been realized. I consume myself with making every lecture and assignment meaningful and challenging. There are many things I don’t do like a ‘regular professor’ but since this is my first semester, I don’t yet have any feedback from the students so, though I think I’m doing well…maybe it’s not seen that way by all. I want to learn about your experiences and see what I can do to improve my teaching. What is the one thing you remember about a professor that really impressed you? Thank you.