Great film posters can tell viewers what they need to know without relying on the exposition. To test our theory, check out Foreign Movie Posters. The blog shares film posters from around the world for familiar titles. In many cases, if you don't speak the language the only way to know which movie it is for would be if you could identify the artwork/photo (the blog includes the English translation of the text with each poster, but ignore that for now). Take a look at some of these posters to see if the text makes a difference in how you analyze the image.
As a sidenote, why are foreign posters often so much better than posters made for the United States audiences?