What can I say that the name doesn't already tell you?

Something too sad to like, too disgusting to enjoy, or simply too evil to be labelled a "favorite". However, they are well-written and/or made me think. My bookshelves are mutually exclusive.

Stories that have something unique that I don't want to disappear. A something that makes you think, or a particular twist on a common story theme. My bookshelves are mutually exclusive.