There are many types of AI from Kwoledge-Based/Expert System styled AI used in Games, and a more blackbox connectionist approach using ANNs to others like fuzzy logic etc, but whats actually used in games and whats not used in games. can someone give an example of a game that has used AI.

This has a good list of games and the AI they use...
http://www.gameai.com/
Read Caveat1 which says...
"Caveat #1: Virtually all games (especially strategic ones) have some kind of "AI", and often use interesting and novel techniques. "

Thank you. the website has been very useful and intresting.