I saw the EE yesterday...I'm not sure if you're allowed to talk about illegally d/ling stuff on these forums, so I won't.
(Hey...I couldn't resist...it's LotR!)
Anyway, it's great...though it actually took away from the character of Denethor instead of adding to it on some parts. Or rather, they intensified his character from the movie. They actually make him seem insane. He loses his temper at Faramir waving his sceptre around, then falls backwards and starts hallucinating.
Another thing: sometimes, the lines just seem too..."memorised". Gandalf rides with Pippin, and a few seconds later, the Witch King lands in front of him. Immediately, Gandalf starts saying "Go back to abyss...". It just seems like he's reciting something he memorised, like a speech. It seems fine when you only look at that part (meaning it's not bad acting), but when you see the entire flow...I dunno. Same goes for Saruman and Theoden talking. Saruman asks "Shall we not have peace, you and I?" and Theoden says his speech immediately without even a brief consideration.
And urgh...I said this in another thread, but sometimes Saruman and Gandalf & co. actually whisper to each other. It'd be hard enough to hear if they shout! Theoden almost whispers "Be free of him" to Wormtongue, and Saruman hears him from about 300m above.
Well, all in all, the EE was great. The above are just a few things that I think they could've improved on.