I saw this article at Film Roster (http://www.filmroster.com/) and immediately thought of Mechaton. "Mark Borlase has built a 5' x 10' Hoth base diorama consisting of between 55,000 to 60,000 pieces of LEGO ... The diorama took 4 years to complete and cost over $3,000."
60,000 Piece Star Wars LEGO Diorama (http://www.filmroster.com/article/60000_piece_star_wars_lego_diorama)