Although Olson is trying to convince scientists that they need to become better story tellers in order to reach the public with their knowledge, his book is a great, concise guide to storytelling that would benefit anybody trying to reach an audience.
The core of his argument is that we have four targets for storytelling: the head, the heart, the gut, and the sex organs. Scientists (and other academics) typically target the head only, which means they reach the smallest percentage of the audience. If they can also reach the heart with emotions, the gut with humor and appeals to instinct, and the sex organs with sex appeal, they have the potential to reach just about everyone.
The same is true for writers of films, of course. Films can be successful hitting just one of these (the head for an art movie, the gut with horror movies, the sex organs with porn). But the truly memorable films hit three or possibly all four.
Olson follows his own advice and makes this a fast and fun read, hitting at least three of the four targets (not sure about his sex appeal!).