Some of my fondest early memories are of THE COACH. He stood stoically on the sidelines most of the time. He rarely got excited in public view. What he did was put up the third most wins by any coach in the history of the NFL, along with more career postseason victories than anyone else.
It is hard to pick any one instance as the greatest Landry memory. That is because he was the Dallas Cowboys for 29 years. Any great memory necessarily includes him, in one way or another.
I can easily remember how proud I was each offseason as lesser teams took to looking for a new coach. Dallas had theirs. How could you improve on him? You couldn't. It was a special thing to be a Cowboy since we only had one coach throughout our history (from 1960-1989). That was the mark of greatness.
He revolutionized the defensive side of the ball first. He literally invented the 4-3 defense while a coordinator at New York, then brought it to Dallas and refined and improved it. The Flex-defense was the result, culminating in the dominating Doomsday Defense of the 1970s. There have been few teams that can claim such a heritage.
But then, as they say, he invented an offense that could score on his own defense. He didn't invent most of the things utilized in his offense, he just perfected them. The shotgun, shifting and motion. He was the man behind it all. He new how to use innovative players, like Bob Hayes. He could find diamonds in the rough and turn them into superstars, like Rayfield Wright and Cliff Harris.
Above all, he was a classy man. As I mentioned at his passing in 2000, "the world is a little bit less" with him gone from it.
You can read about the greatest coach of them all here.