Promising Practices
I think the key ingredient in teaching is effective communication. Keith Richards of the Rolling Stones observed that communication is controlled by the listener not the speaker. To this end, knowing a student's name creates a comfortable, familiar environment. Recognizing them on campus and greeting them by name fosters a relationship that is friendlier and less hierarchical. It gives the impression that the teacher views the student as an equal in the process of learning about life—it demonstrates interest in them as a person. Calling on a student in class (by first name not by 'hey you') and tailoring the question to their major or their background, involves not only that student, but others who may be able to see practical application of the topic. I have students call me by my first name for the same reason. If they view me more as a friend and less as the person who holds their GPA hostage, then I think learning is facilitated.
I also think a good understanding of body language is not only essential for becoming a good teacher, but also can be quite rewarding. The ability to spot those faces who are struggling with a concept gives me an opportunity to rephrase the concept, seamlessly pausing or continuing the lecture so that everyone keeps up. Knowing your audience and whether they are with you or not avoids embarrassing a student by asking for a show of hands from those who don't understand. The flip side of this is recognizing when the 'light of understanding' suddenly comes on. I can think of few things more rewarding than seeing a student struggle with a concept and then suddenly grasp it. I am able to then share in their joy of accomplishment, whether they know it or not.