To 
Encaitare:  (We seem to be spreading Gríma posts everywhere!  

 )
You're right, it does give him character development, and I'm happy that 
somebody says it.  In context, Aragorn thinks that she is "fair, fair and cold, like a morning of pale spring, not yet come to womanhood." If you think about it, to Aragorn, that's what it would seem like: He is four times her age!  Still, I wish Aragorn had gotten to say it...
Another mangled line is when Pip and Treebread are talking about the Entwives:
Treebeard: We lost the Entwives.
Pip: Oh, I'm sorry.  How did they die?
Movie-Treebeard: Die! No, we lost them and now we cannot find them.
Book-Treebeard: They did not die.  I never said that they died.  We lost them...
I think the only reason why I care about that is because I thought it was really funny, and memorized it before the EE came out without two of the sentences I had memorized.  Still, it's more characteristic of Treebeard to say those two sentences...
Yeah, I'm just a whiny nit-picker.