I have mixed feelings about AI for Game Developers." In the full Safari bookshelf, the AI category has Voice Application Development with VoiceXML which is a much more "enterprise-y" type of read.
On the other hand, even in "full Safari" there's only 8 books in the AI category, only 3 of which are really about AI, and all 3 of those are game-focused. To me, the opposite type of approach would be more appealing: access to a large number of academic titles.