I was at the video store over the weekend and came across the "Festival Collection" on the wall amongst the New Releases. It's easy to miss. The movies sit politely on the shelves all with the same bland covers.
The graphics on the box can sell a movie even if it's a crap movie. And for an independant film, they are absolutely integral. Take the second group of images for example. Most often, it is the smaller budget ones that break creativity boundaries.