Nick Montfort's "Narrative Variation"

Just a quick link right now, if you're interested in Interactive Fiction at all you should check out Nick Montfort's dissertation on generating variant narratives:

http://grandtextauto.gatech.edu/2007/06/20/playing-defender/

A very cool spec for a system called nn that splits up a story between what is being told, and how it is told, something that until now has been controlled by only one entity. Montfort's approach consists of many smaller modules, and is making me pine for a version of nn to try out on my own.