Things I liked: Damn near everything.
Little tiny things I didn't like:
Legolas snowboarding down the steps
The Arwen interludes (but my wife, not a reader of the books felt that those interludes did show that Aragorn was not tempted by Eowyn and was still totally faithful to Arwen -- so I can see, by that, the point).
The Galadriel narration
The change of the end of the battle of Helm's Deep
and not too much else (gotta run again, more later).
Thanks for your take on TTT.