As promised, I would really like to provide links to great CGT resources. This initial list will be of things I have used.
First, David Eppstein's CGT page is a necessary starting point. This contains numerous links to other CGT sites as well as links to playable versions of many well-known games.
FUN 2010: 5th International Conference on FUN with Algorithms will take place June 9-11, 2010. The only notification of this I know of is this page from Erik Demaine.
Of course, "Winning Ways for your Mathematical Plays" by Elwyn Berlekamp, John Conway and Richard Guy is the classic text for CGT.
I am hoping to teach a course in CGT in Spring 2010. If I do that, I will likely use "Lessons in Play" by Michael Albert, Richard Nowakowski and David Wolfe.
Erik Demaine and Robert Hearn's survey paper on Algorithmic Combinatorial Game Theory has been a particularly good reference for me.
Aviezri Fraenkel has an extensive "selected" bibliography (pdf) of combinatorial games.
Thane Plambeck runs his own blog focused exclusively on misere games.
I have used David Molnar's page before, but I can now not find a location for it... I will fix this and post a link as soon as I can find one.
Finally, I like buying and playing games a lot, and boardgamegeek.com is a good resource for finding info about published games.
I hope these are helpful!
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