The occasional Lego sculptures that I post are interesting mainly in the sense of: "Yowza, that's a lot of Lego blocks."
But Nathan Sawaya, formerly a corporate lawyer in New York, brings a definite artistic touch to his craft. These would be impressive enough in a more conventional medium -- in the field of constructing things with small plastic doohickeys, he'd be giving Michaelangelo a run for his money. I'm tempted to order up a copy of The Pieta to prove it (he does custom projects) but I don't think I could swing the five figure prices he charges for larger pieces.
Interview with him here. There's a photo gallery but no direct link, so scroll down to the fourth paragraph and click on the link there to see it.
Or you could go directly to his website here.