I saw RotK yesterday and Mark Levin has it exactly right. I would have loved to see a longer movie, and told my friend who saw all three movies with me that RotK actually could have been two movies.
And here's my big news flash review after watching all three. PJ should have cast the man who played Eomer 
as Aragorn. YES! I never liked Viggo as the king; only as Strider, and I do not find him an attractive lead excepting in how very well he acted out Elrond's castigation that "men are weak." Eomer, despite his youth (in real life) carried his role extremely well and would have been a very believable, very honcho, Aragorn, 
and a great love interest for Arwen. All they'd have had to do is make him up to look a bit older.
These critiques are not because of being a starry-eyed teen as I am neither.