4 years ago I created a new AI model for Tax returns created with PHP and MySQL. In the end it was to complex to structure the dialogue in a constructive way. During research for one of our projects I was digging the web and found the Singularity Institute for Artificial Intelligence. Since then I was amazed about their publications and methods. This is really cool stuff.
The Singularity Institute for Artificial Intelligence (SIAI) is a non-profit organization founded in 2000 to develop safe artificial intelligence software, and to raise awareness of both the dangers and potential benefits of artificial general intelligence technologies. The SIAI sponsors numerous research projects, both theoretical and applied, and has recently begun to structure applied research under the umbrella of OpenCog, the Open Cognition Project. OpenCog is software for the collaborative development of safe and beneficial Artificial General Intelligence, and aims to provide research scientists and software developers with a common platform to build and share artificial intelligence programs.
See these projects on Google Summer of code
If you are a newbie to AI or just want to go fast forward see the videoblog by Eliezer Yudkowsky and John Horgan