Contact 1: Millenial Celebration of the Eternal Choir at K'al Yne, Odan by Mike Doyle
Mike Doyle has built possibly the greatest MOC ever! And that is no exaggeration. You would be very hard pressed to find a better one.
Dang! This is monstrous! 200,000 pieces + 600 hours of work = one phenomenal creation. Don't forget to let Mike know how great this is.
I defy anyone to show me a better MOC than this. Up to the challenge?