Hudson & Allen Studio, home of sculptor extraordinaire Ken Osen, has a facebook page. If you do the whole Facebook thing, I would recommend checking them out. Besides being the most prolific and talented sculptor in the business, he also does amazing diorama work. The buildings he has shown off at the past couple of OTSN shows have blown my mind! Their slogan is "When it absolutely, positively has to look real!" I'd say their buildings live up to that motto.
Another great company to keep track of, and facebook is there to help ya do it!