Hey all,
I don't think I've seen this mentioned yet, but a fellow by the name of Ian Schreiber is conducting "an experiment in game design and teaching" this summer in the form of an online game design class, using a blog to post lessons and forums to host discussion.
http://gamedesignconcepts.wordpress.com
It looks to be interesting. I think most of the participants come from (or are oriented toward) video games, but the class is explicitly focusing on non-digital games. It's free, but has 1 required text and 2 recommended texts (some of which many of you probably already own, such as Koster's book).
He just posted the syllabus and the class proper doesn't begin till the end of June, so you have time to take a gander.
Cheers,
Mike