I found these while buying some XFrog plants...
http://www.beldenbrick.com/ (http://www.beldenbrick.com/) Links on top right of page.
This brick company provides brick and paving texture generators to show off their products. There's a useful degree of customisation, the resolution is reasonably good and it beats the hell out of trying to rectify distorted photographs of walls. Saves in a variety of formats (all the useful ones).
Fancy.
Thanks, BB. This looks helpful.
There is another brick texture generator called Bricks'n'Tiles that also supports bump maps: http://www.bricksntiles.com (http://www.bricksntiles.com)
I just make my own up in a paint program. Fractals applied after the image really can make them look great.