Maybe some of you know him already, but I recently came across his gallery whilst trawling the net.
Edward Winkleman. He has a gallery in Chelsea NYC, but also a great blog.
http://edwardwinkleman.blogspot.com

It makes great reading about what it's like to be a dealer, sort of an insider fly on the wall thing. Great because us artists never know where the hell we stand with our own dealers, and how best to negotiate the utter mine field that is the Gallery/Gallerist...