Whoever said you can't judge a book by its cover didn't know me! I (sadly, maybe) almost always judge a book by its cover - before I've read it, that is. I'm a visual person, maybe that's why I do it, but I bet most people would agree that they are more likely to pick up a book if they are intrigued by the cover. The same can be said for just about every other product out there that incorporates some element of design.
Unique graphics can draw you to a packaged product, and when I came across the following site, it reinforced my opinion on the subject.