[Lalaith]

I'm glad so many people had issues about Theoden. That really annoyed me, he was about as different from the book as he could be. Theoden is supposed to be a kindly contrast in kingship to the coldly intellectual yet ultimately ineffectual Denethor. Instead, PJ just made him a Denethor mini-me.
Thumbs up to what Lyta and lots of others say about Elijah/Frodo. Too young, too one-dimensional.. Can you really see the Council of Elrond letting that quivering little puppydog loose in the Wild with the One Ring?
Tinuviel of Denton I also agree with your Pippin and Merry comments. I was really unhappy about them in FOTR, they became slightly less idiotic in TTT but even so...and ditto Gimli.
Legolas: lol at Yavanna228's "Captain Obvious." Not OB's fault, more the script, especially in FoTR. I like movie Legolas, actually.
Lobelia, absolutely agree on Arwen and the Luthien heritage. It's what I've been saying all along...I'm glad I've got an ally on the Barrowdowns! I think that the Arwen change could have been carried off better, though, with an older actress with more gravitas. Someone like Isabelle Adjani.
But I am all alone I think in not being a fan of the Miranda Otto Eowyn. Not Otto's fault at all, more a question of how the character was conceived. I wanted an ice maiden, and what I got was Meg Ryan lite.

Also would disagree about Boromir. Sean Bean is a great actor but this wasn't how I saw Boromir. I had visualised him as a bluff, barrel-chested soldier, loyal and slightly stupid. He wasn't clever enough to see why the Ring was dangerous. But Bean made him rather too intellectual and tortured. Still,movie Boromir was an interesting character.
I'm also coming slowly to terms with movie Aragorn, who I agree is fundamentally different from the book. Viggo is a bit too goodlooking (well, much too goodlooking really) to be Tolkien's Aragorn. Tolkien Aragorn was stern and I think rather bruised by his years of exile, he was tired of tramping through wilderness and longed to take his rightful place. Movie Aragorn LIKES being a freewheeling Ranger and sees kingship as a burden.
King-Elendil, agree about Eomer, Karl Urban gets it just right...
I like Cate Blanchett's Galadriel but could SO have done without the special effects during the "Instead of a Dark Lord" speech.
Also approve of movie Gandalf and movie Saruman (and agree about hating the wizard duel) and movie Bilbo. Class acting.