At GDC last week I gave a talk called "The Self, Presence and StoryTelling". There will be a version of it up on the GDC Vault in 2 - 3 weeks I think and hopefully it will be free like last years' talk. Before that comes up I will put up a pdf version of the talk containing a bit more information (something I promised at the end of my talk). You can get hold of that here:
Download "The Self, Presence and Story-telling"
Get the mobi version here (thanks to Tomasz Rozanski for creating this).
The paper is basically a summary about a lot of the stuff that has been written on this blog. It is an attempt to define a new design approach that makes it easier to make games that can deal with a wider range of themes and let you play all the way through. I would be very interesting any feedback you got as I would like to keep the document updated and revised if there are any new insights or any info in it that is no longer true.
EDIT: Proof-read the paper a bit and made a little bit more readable.
EDIT2: Mobi version now available.