I was raised to be polite, and my behavior and attitudes carried over into my work. People usually treated me the way that I treated them, but not always.
I did work with many doctors who had a "God complex". I remember one year when I was the evening shift coordinator in our NICU. We had a horrific, God-awful surgeon who would yell at everyone, and curse at his residents.
It got to the point that when making out patient assignments, I couldn't get nurses to take care of surgery babies. The nurses that DID have these babies would scurry out of the room if they saw Dr. G coming in on rounds. If they stayed with the baby, they invariably ended up in tears by the time he left. So I'd meet him @ the front of our NICU, and follow him from bed to bed, answering questions.
I explained the situation to my Nurse Manager, and she spoke with Dr. G. He came out with the "who, me?" attitude. Denied everything. Said he NEVER raised his voice or cursed. Then when he came in on rounds, he asked me if nurses were really afraid of him...I just stared him down, and he grinned. He knew that I wasn't afraid of him. And as much as he hated to admit it, he respected me for that.