I am often surprised by human ingenuity, creativity, skill, and disposable income.
As a cynic, however, I often wonder what such an artist would have achieved if they sustained stable employment ...
(I have a FOAF who is a lego-head, also married to one, even honeymooned at the lego convention. I don't think they have attempted anything to this degree.
A couple of my other lego favorites are the
Escher works, and the
Lego Desk.