The section of the online home of New Scientist magazine devoted to AI and A-Life (artificial life).
Lots of interesting articles, check it out. A great place to get ideas.
The Game AI Page
An essential website
Machine Learning in Games
Looks interesting...
How long before superintelligence?
A very interesting essay; a long read but well worth it.
Neural Network sites
Diffusible GasNets Home Page
A great site, with a nice concise explanation of gas-nets and several highly-interesting research papers available for download.
Neural Networks with Java
some nice Neural-network explanations
Neural Network FAQ
This is posted to the newsgroup comp.ai.neural-nets every month. A vast amount of imformation, but it is very technical, with lots of mathematical jargon. If you want to look at NNs from a mathematical viewpoint, this is a place you must visit. (personally I prefer biological info)
RoboKoneko guy's home page
Info on the RoboKoneko project - the team is currently building a robot kitten with 75 million artificial hardware neurons.