Innovative Book Designs

Innovative Books: I am looking to compile a list of the most innovative uses of the book format. Books that break the mould in their layout and design, perhaps books that use online systems to extend their content value or push their form into new places. I am most interested in narrative and theory, but any book that is interesting (artist books etc.) would be really appreciated. I have a few examples, in order of publication, to set the ball rolling:

Compendium for literates : a system of writing by Karl Gerstner - A book about book form in an innovative form. Beautiful and still fresh

Dictionary of the Khazars: a lexicon novel in 100,000 words by Pavic - a 'dictionary novel' "written in two versions, male and female, which are identical save for seventeen crucial lines"

A Humument: A Treated Victorian Novel by Tom Philips - an artist who has used one particular edition of one particular book as a space for his work for many years

The Selected Works of T. S. Spivet by Reif Larson - extended use of footnote, side-note and illustration to give the narrative dimension

I would love any ideas you have!

Original Link: http://ask.metafilter.com/mefi/136961