At my first job, I was in test automation. For a major new complicated feature, I was the test lead and its final stages coincided with a company trip to Israel. I got to sit side by side with its lead developer and he went over all his code and database changes with me. He kept stopping because I guess I had that deer in headlights expression and he thought he was boring me. Actually I was just in awe. He was so proud of his work on it and had every right to be. It was so cool of him to take an hour or two and break it down for me like that.

He told me he wanted to make sure I understood all the pieces involved so I could test more and he could release a rock solid new feature.