One of my favorite design blogs out there is Minimal Movie Posters. They have some great and even inspirational pieces. It's very refreshing to see your favorite films portrayed in the simplest terms, using no photography. This example is one of my personal favorites:
Those who have seen the Star Wars movies will instantly recognize this scene - Tatooine's sunset, with its twin suns. Using a few simple shapes, elegant type, color, and texture the designer has successfully depicted an iconic scene from this film and created that association. I think this is really great minimalist design and serves as a good poster for the right audience. However, people other than Star Wars fans would have a difficult time understanding this poster, which is why not much of this design is used commercially. I find that I don't understand posters on this blog for movies that I haven't seen, which is perhaps the one flaw.