The Question: Do you think about past reads?

At seemingly odd times, a bit of text, a scene, or a character from a past read will pop into my mind. From books that made very little obvious impact on me suddenly prove themselves buried deep into my psyche, much like that lone Narcissus papyraceus that pops up in the center of my lawn each spring.

The first book that haunted me a little, but in a positive way, was Arthur C. Clarke's Childhood's End. I am not a huge science fiction book fan, so this is not a genre that I read very often. However, this book drew me right in. Based on an alien invasion, the "haunting" scene is where a human is trying to explain to the "Overlords" our need for sleep. It is a concept that is completely foreign to them.  

Another scene in my memory is from Jennifer Weiner's book Then Came You. Weiner is an author that I do not read enough of. Her characters are always so likable, real, and the situations are familiar and completely relatable.

This "haunting" is a scene in which an adult child of long-divorced parents realizes how different the much-younger new wife relates to her father than her mother ever did. With this, she comes to understand that what her mother and father needed were very different when they married than when they divorced. It was an epiphany borne of seeing her father's wife lean into him with her body language, giving the impression that he was truly holding her up. Her mother had grown into a very independent woman and no longer needed a man in that way. Resentment for his new marriage dissipated, and the story truly turned a corner.

There are more, but this is already longer than I wanted it to be. What are some of your "hauntings"?