We're getting a little tired of Minecraft's arts-and-craft shows. Yes, you made Mega Man, well done. But there's always room for applause when people recreate BioShock's Rapture in its entirety, complete with whales.
Actually, even that sells the whole thing short, because the creators - members of Penny Arcade's forums - have even recreated the introductory sequence from the game, and populated the world with characters from Irrational's underwater epic.