A Theory of Fun for Game Design by Raph Koster. I'm a little more than halfway through it now; I'll review it more fully when I'm done.
Ha, I thought so. Was planning to purchase it, but wasn't so sure. I know so many anti-Raph game designers by now that its starting to scare me (Although I don't disagree with him anywhere near as much as them); The usual trend is to claim that he overanalyzes and based on the failure of SWG is incapable of creating something fun.
As far as my own opinion on that, I certainly think hes onto something (Game grammar, 'why levels suck' and similar). Anyhow, sorry for the de-rail. Guess I'll pick the book up from Amazon next month.
Lummox JR