I have two.
When I was a teenager, I was working with a group of brothers. In order to cover the territory quicker, we went to the doors by individually. I walked up to this one door, rang the bell and this very attractive woman wearing just a bathrobe and a smile answers the door. I go through my presentation and still smiling, takes the magazines and thanks me. That just made my day.
One time, I got my Social Studies teacher at the door.