"A diversion."

[Elianna]

Essex:

...tall and kingly he HAD BEEN, but NOW he was withered as an old stone...

(emphasis is mine, duh)

Technically it isn't straight from the book, because Lego says it, not the old man, or even Théoden. OH! I just got an idea as to how they could've done it straight from the book:
As Aragorn and Co. were approaching the door, they could cut back and forth to the scene with Merry asking about the Pathes of the Dead. Legolas can go ahead and explain why there are dead men under the mountain, and Théoden explain about Baldor's adventure there, which would include "The way is shut." So we have the Rohan royal family talking together at a meal (doesn't it just warm your heart?), Merry being Théoden's esquire, some history of Rohan, some added suspence at another royal man failing to pass the Pathes, and no annoying Lego line. (Hmmmmmm, wouldn't it rock if that were in the EE?)

The Only Real Estel :
Chapter 6 in the Galactic Phrase Book and Travel Guide is all about "droidspeak".
(Sorry, that's not Tolkien related is it?)