They may be few and far between, but there are still moments of greatness on this board. This will serve as a place to archive these moments to make sure people are aware of them. Be mindful of the length of the exchange you are posting and try to only include what is relevant to highlight its greatness. Obviously, there were many great moments before the creation of this thread, but we are talking about from here on out.
I start with a small exchange that many people probably didn't see due to the thread it was posted in: