mrbenja0618:
Sky Captain while not perfect, still had great acting despite the fact that it was almost entirely CGI... So, what was his problem here?

I think a lot of people will strongly disagree with you, for exactly the same reasons the actors were wooden in the PT. While Neeson can hold his own, you can't be comparing anyone else in the PT with Paltrow, Jolie and even Law? Ewan McGregor, again, a top notch guy, but he is really, really not that great an actor. And Natalie Portman is only good when she has a strong director. So yes, the complaint about green screens and Lucas being a lousy actor's director are perfectly valid.

Bingowings:
Christopher Lee appeared to give an uncharacteristically flat performance and he is theatrically trained, worked a lot on radio and has worked well on other green screen heavy films.

Maybe he gave a good performance that was massaged to death in the editing or not very well photographed (we don't have all the footage so it's impossible to tell).

Well, he only really has one scene where he's talking with another actor at length, when Obi Wan is strung up. The rest of his scenes are either against CG characters or just odd lines with no real structure in the middle of action scenes. I think his class still shows out in the scene with McGregor. Other than that, he doesn't really register much because his character is totally undeveloped. In the Lord of the Rings movies, he does at least act with real actors in all his scenes, and pretty good ones at that.