The first 10 or so came from
Filmax International. (With the exception of the one where he's yawning? Or stretching? I don't know. Found that one at some news site somewhere. And the very first one... which is everywhere.)
The next 20, the nice screen caps, they came from
Swimming Upstream. I tried to ask for permission since the site owner capped them (and to send my files since the ones there were all squashed and wonky), but now I only get an error when I go to that site.
Everything else (I think) came from
Brad Anderson Filmmaker.com( The Machinist Stills )