What can be defined as bad box-art? Is it something that is legitimately bad from a aesthetic perspective (like the North American copies of Mega Man and Ico)? Or can it be something that is competent enough, yet fails in communicating the actual content of the game (Spec Ops: The Line and Bioshock: Infinite spring to mind)? Does it actually matter?
Anyway, what are good examples of lacking box-art for good games? My picks would be Mass Effect 2 and Spec Ops: The Line.