I remember there being a post a while back about putting together a resources page or a sticky in the forums for links to useful sites.
Here are my Game A.I. ones:
ai-blog.net
ai-junkie.com (forum activity has died off but very good GA, NN and SOM tutorials)
Gamedev.net’s AI forum
Alex J. Champandard’s site (the ‘pathematics’ guy)
Jeff Orkin’s site
Steve Woodcock’s Game AI
Craig Reynold’s site (mostly steering behaviours)
GameCareerGuide.com Article on Steering Behaviours
AIForge.net
aboutAI.net
Human Level A.I. in Computer Simulations and Wargames
AI.Implant whitepapers
SimBionic whitepapers
Some General/Academic A.I. links:
AI On the Web (good place to start, unfortunately some dead links)
Generation5 (forum ruined by spam bots)
AiGuru
Rod Brooks ( helped to start the biologically inspired approach)
Nils J. Nilsson
Randall D. Beer (v.interesting work with Dynamical Systems esp. CTRNNs. WARNING! Lots of Maths!)
Just purely for my own amusement:
Some videos of biologically inspired robotics research from Lausanne