Look at the cover below... It looks like a perfectly ordinary cover doesn't it?
That's not to say it's not a perfectly good cover - it's simply that it's not a real cover. Not in the sense that it was published with the book anyway. Over here, is a site where a designer has taken on the task or redesigning the covers of some of the books he reads :)
This appealed to me because as an author I dread getting a terrible cover, and I'm sure there are authors the world over who wish they could redesign a cover. Here's someone who's done that - if not for the reasons that most authors would like to :)