[HairOfTheDog]

Yes - I think Helms Deep looks great in the snippets of film we have seen. Very much like I imagined the scene too... So everyone just forget about any orc wall-climbing you may have seen... or maybe Jackson's Moria orcs are a unique mutation of wall climbers, and they are the only ones that can do that. However you wish to file it in your own mind so that it works!

[2Jedismom]

I guess I have always thought that the orcs in Moria are a different sort than the ones from Isengard. And the movie makes them look smaller, more like what I think a "goblin" ought to look like. Perhaps that's why they can scale walls.