here's the link
I haven't seen them, but many people here seem to feel these are quite good.
Nan, at the very least you should try the three on modeling. I *thought* I was pretty good at modeling, but I learned so much from these I felt like a beginner again, but in a good way. They made me feel smarter. And he's talking about AM specifically, not animation or storytelling theory, which certainly both have their place.
Only in the rigging section does it get a bit troublesome, since a lot of what he's doing depends on whether the constraints offset button is on or off by default, an interface change that we all struggle with a little bit. and even at that, there's still a lot to be learned by watching, if not actually rigging along with him.
The modeling stuff is pure gold though.