100% free stock photos

If you are looking to work with stock photos in your projects but dont wanna buy them or download them illegally, here's a round up of good stock photography site for you. All of them feature pretty good quality images and are 100% free and legal. The main contents come from amateur,professional and semi professional  photographers who contribute to the site under creative commons. Well, that apart, check out these sites.
 I will add more as i keep digging out good ones...

http://www.stockvault.net/  [my fav] [sample img above]
http://www.free-stockphotos.com/category/free-images/
http://www.freedigitalphotos.net/ [paid but low res free ones]