I took Cat's "New Sock Architectures" class at Stitches Midwest on Sunday. It was great, and I recommend a class from Cat to everyone. By thinking open-mindedly about sock construction (let's try putting the increases ... there ... and there ... ), Cat has really opened up the sock universe.
I've always been a top-down, double-point sock knitter, and it's always worked for me, so I haven't messed with it; I've exercised my curiosity in other aspects of my knitting! This class is certainly going to change my view of making socks, particularly toes, heel turns, and edging.
And I am so in love with Judy's magic cast-on that it's not even funny! Here's Cat demonstrating it: