I was walking home with my shopping recently on a narrow path (busy road on one side, with bushes on the other side) and an older gentleman was walking towards me in the other direction. As we neared each other he stopped and stood aside for me to pass, giving me a sparkling smile as he did so. I thanked him as I went past, it made my day.
People who get on the bus and go straight for the nearest seat when they could walk a few more paces to the middle, and then don't move for the passengers who need those seats really annoy me!