How To Judge a Movie By Its Cover

Take a look at the cover and see if the image is objective or subjective. In other words, is there a plane flying and some guy hanging on from the outside like he tripped and fell through the door, and is holding on for his life?

Then most likely that's the best scene you'll get out of the movie.

Is the cover a little more vague, with no objective action scene or image?

Then most likely this movie will have an deep intellectual meaning.