Recently a New York based designer came out with a series of book covers to the series of Kafka books.
Kafka Book Covers
They are a bunch of cool, colorful images that show the purpose of each book through a well designed cover.
The Eye image is used throughout the covers, and the color palette stays pretty similar, as well as the typeface.
It is an interesting idea, and with book covers being as design heavy as they currently are, it is nice to see something that stands out from the pack.