I've never bought that argument. How do stage actors manage, then? Sometime it's literally just the actor by himself on an empty stage. Yet they somehow manage to act.
Besides, nobody complained about the abundance of greenscreen in the last 1/3 or Return of the King. Oh wait, it's not cool to nitpick LOTR.
Thank you! Also the fact that WETA contacted ILM for tips on their CG.
I also want to know what films Natalie Portman has supposedly been a great actress in. Aside from Leon... which I don't think is really a good example anyway.
She was good in her small part on Cold Mountain.