Most of us are familiar with the term “sleeper cell”–referring to agents who are “embedded” into an area or country, where they live quietly and under the radar until it’s time for them to act, such as committing a terrorist attack. Decades ago, I began to notice what I’d call “sleeper people.” I distinctly remember seeing Rosie O’Donnell on the cover of a popular magazine while standing in line at the supermarket. She had just co-starred in a movie called A League of Her Own with Madonna and Tom Hanks. I realized right then and there that certain people are...