I've just spotted the Book Hack Day http://lanyrd.com/2011/book-hack-day/ in London 14th May 2011 and have spun a few ideas around my head. I would like to create a performance of a book via Twitter conversations between characters. Another possibility is a geo version of Ulysses by James Joyce
http://www.gutenberg.org/cache/epub/4300/pg4300.txt for http://en.wikipedia.org/wiki/Bloomsday
Anyway, I had better check my calendar before assembling a team.