BrickFair 2013 - LEGO Serenity
This minifig scale LEGO model of Serenity from Firefly took 21 months to build. It contains over 70,000 bricks, measures 7 feet 2 inches long and weighs over 135 lbs.
Built by Adrian Drake of Westlake, Ohio, the model includes a light up engine and detailed interior.
Hopefully the photos capture at least a little bit of how epic this was in person.