Fun: Stanford University offers 'Into To AI' free and online for all!
From the website (http://www.ai-class.com)
"The class runs from Sept 26 through Dec 16, 2011. While this class is being offered online, it is also taught at Stanford University, where it continues to be a popular intro-level class on AI. For the online version, the instructors aim to offer identical materials, assignments, and exams, and to use the same grading criteria. Both instructors will be available for online discussions."
Learn more about the program:
How the course works:
Sound like a lot of fun... I only wish I had the free time myself.