Ken Rockwell
This guy is a great source of photographic information. I have tended to follow his advice on camera choices.
http://www.kenrockwell.com/index.htm
Immo-Cam
I worked and trained with this company in Switzerland.
http://www.immo-cam.ch/en/index.php?id_page=1357
David Vidgen
This guy takes some awesome black and white wedding photography images.