If you were going to write a memoire, what would one of the more interesting vignettes be?

I was talking to a memoirist today, and she said that she wrote about four times more than appeared in her book. She also talked a little about the process of choosing which events to include, and which she left on the editing room floor.

This made me wonder what other people would choose as a kind of central story for their memoire—some event that helps us make sense of everything else. In a paragragh or two, could you tell that story?