An excellent list that budding AI developers might find interesting is the NPC AI list. There were forums there until late 2001 when they were all moved over to the IGDA site. The scholarly Generation5 site has an excellent Discussions Forum for all things AI-related. The discussions tend to be a bit more technical and philosophical than those found on some of the other sites, and a perhaps broader variety of topics are more normally found. It's a fun site and a great resource for all kinds of game developer information, so drop by if you get a chance.
Net site has a possibly better set of forums for the discussion of all things game-related.
There is an AI forum, of course, well moderated by myself with the help of a couple of others and covering a wide variety of ever changing topics. Another excellent resource for anybody with a problem they need help with. Some excellent ideas came out of this thread over the course of its run. Read it here . Spinning out of and running in parallel with the Strategic Dispositions thread came yet another fascinating discussion, this one dealing with the problems involved in teaching the computer to recognize where enemy units were.