The teachers I learned the most from were those whom I respected because they were good, hard working human beings that treated students with respect...
That's the first key. To get students to listen to and respect us, we must show a desire for our teaching and a desire for their learning. The first skills any teacher should observe and be taught are the interpersonal skills needed to gain student admiration. It's not delivery, knowledge, testing procedures and questioning... it's human-to-human interaction on a very personal level with no one left out.
I had teachers who made learning fun and interesting because of who they were and their sincerity.
Now, no first year teacher will create a repoir the same way I can. No vetran teacher can mimic me just as I cannot mimic them. We can borrow methods of interaction but if it's not from the heart, kids will know it's not sincere. There is a balance that has to be struck between friendliness and familiarity with familiarity being the least desired attribute of a teacher. But there has to be enough familiarity for students to feel comfortable around us.
These are things that can't be taught, only felt. These things can be learned by new teachers if they are willing to take their lumps and not blame teacher prep programs for not being prepared.
A young teacher once observed me and made comment on the converstional manner in which my students interacted with me during a lesson. He said he wanted to do that but didn't think it would work in his class because the students wouldn't behave well enough. I explained to him that my first years were not like that. I learned by a trial of fire how to accomplish this and he would too. After methods of interaction are learned, other approaches to teaching can be experimented with.
So to sum these thoughts up, before any teacher can develop perfect lessons, keep everyone's attention, create the most attractive interest approaches, they must make themselves personable.