Check out Philip Heinrich's [url=http://www.ldraw.org/module-LdrawMOTM-entry-modelid-132.html]The Forces of Isengard:

This scene won LDraw.org's Scene of the Month for February. Philip discusses the creation of this scene in detail in an article, Building an Army.
This scene is actually a still from one of Philip's brickfilms, The Two Towers: Tens of Thousands.
Bruce