where to get textures?

I was just wondering where you could find some good textures, especially background/world textures- and i mean some realistic ones

http://www.povray.org/resources/links/3D_Image_and_Texture_Resources/Texture_Resources/

http://perso.club-internet.fr/lemog/

http://www.the3dstudio.com/textures.asp

http://uvmapper.com/classic.htm

http://www.3dcafe.com/asp/default.asp

http://www.mayang.com/textures/

if you can’t download them then if you have a digital camera take some pictures of things and then you can those as textures.

just an idea