Almost everything can make a good graphic if we think enough. A marvelous example is Stefanie Povec's work with the novel 'On the Road', by Jack Kerouac. Making graphics of every detail in the book. The page shown above analyzes the lenght of the sentences. The rythm can be also have a visual reference. Below, a graphic with the punctuation marks.
Some may say this is a freaky task, but one of the freaky tasks I love. Thanks for the link, Carmen