I liked Tolkein's original book cover: it highlights the dilemma of the rings of power: all rings lead to Sauron's eye, especially the one ring: http://i.imgur.com/hKUaH3i.jpg
Kind of like using the internet: You think you can become invisible/anonymous, but you become very deeply exposed to the gaze of a remote entity.
That is a beautiful metaphor. Thank you!
For those, like me, who are unable to attend the exhibition, the book produced based on the exhibition is worth getting [1]