http://www.gamasutra.com - Another large resource for Game Development, operated by the GamaNetwork, which also hosts the Game Developer's Conference, and publishes Game Developer
http://www.gameai.com - The definitive resource for Game AI, run by our own Steven Woodcock.
http://etc.cmu.edu - Entertainment Technology Center at Carnegie Mellon - lots of info about their program as well as a huge list of links to game related programs from other schools.