Thanks for putting this stuff together here, it's a fun and interesting batch of links, and I plan to nose around more in it.

Btw, the first artist that ever mattered to me, when I was a kid, was Leonardo, and I recently looked at those things again after years. It's funny how much I'd never noticed about the stylistic effects that got to me--like his feeling for that certain grey, evenly lit weather, the abstract almost 2 tone faces, how he rarely ever painted the whites of eyes. Now it leaps right out at me.