ZCerberus built this LEGO Castle scene for the Guilds of Historica challenge over on Eurobricks. Orcs defend their home against a marauding human army (or something like that).
ZCerberus built quite a few motorized elements into his diorama, including a whirlwind, battering ram, and catapults. Check out the video for the action.
OK, those motorized parts are incredible. Well done!