I took CS188 (the AI course) recently and it was really great. Dan Klein is easily one of the favorite CS professors among the students--everyone really loves his class. He is, critically, a great <i>educator</i>. And, naturally, great fun. The lectures were certainly fun to attend even when the material was relatively easy.<p>The online version only has half the material. However, this makes sense; the class is naturally divided into two parts. The first half was focused more on AI and search problems and the second part was more about machine learning. I suspect the only reason it is one class is because it has to fit in the semester system. Online, naturally, it's liberated from this constraint.<p>Anyhow, I definitely recommend this for anyone interested in AI. And even if you're not interested in the field as much, it's a fun course and only lasts three months.