Stock-Photo sites

Ok, here’s the deal.
What does every designer need now and then?
That’s right - stock-photos.
And what’s the best place to get those (not to be confused with the place to get the best) ?
Right again - free stock-photo sites.

So come on people, gimme your best free stock-photo resources.

http://www.sxc.hu/ <- here’s the one I always use