http://www.photoshoproadmap.com/Photoshop-blog/2008/11/30/60-impressive-free-high-resolution-textures-and-backgrounds/ (http://www.photoshoproadmap.com/Photoshop-blog/2008/11/30/60-impressive-free-high-resolution-textures-and-backgrounds/)
you can never have enough textures!
Anyone used this lot before? They're offline now but if you've already got an account you can still get the textures.
http://xnatextures.com