Just some quick things that I thought were cool and worth checking out if you're interested in the kind of stuff I generally post here. . . .
Marco Giordano has been cranking out some sweet tutorials on Maya using math-y stuff. This one caught my eye: https://vimeo.com/66262994
Great stuff! He does the pole vector in essentially the same way I do, but he goes the extra mile and orients it. Which is sweet. You should check out some of his others too. I especially liked the one about using a cone to drive pose space correctives: https://vimeo.com/64958089
Charles Looker going over some math stuff, which is always cool in the context of 3D: http://charleslooker.wordpress.com/2013/05/21/maths-101-back-to-basics-matrices/
Danny Williams. His stuff is always nasty. Here's some artwork via Flooby Nooby: http://floobynooby.blogspot.com/2013/05/the-art-of-danny-williams.html
Here's some modeling stuff. Really? Modeling like that from a 3/4 view? https://vimeo.com/59582056
His blog: http://www.pointpusher.com/
I generally don't aggregate much here (read: churn other people's stuff) mostly cuz I feel like there're enough places around that do it better, more often, etc (like Lester Banks, etc), but once in a while is okay, right?