Sean Kenney is a great member of the LEGO community. He's made many great MOCs over the years, including recreations of parts of New York City, and also founded MOCpages, a site that allows you to create your own LEGO website. He is now a LEGO Certified Professional, and sells custom creations. More can be found on his personal website. It's probably no surprise that he has also made many great microscale creations. Notably he has made various micro scenes of New York City, and, along with Nathan Sawaya, this Great Wall of China.
They're much smaller creations, but I'm really taken with the clever construction of Sean's motorcycles