You're comparing Sky Captain with Jurassic Park?

But thanks for bringing up Sky Captain. I'd forgotten about that film, and it makes me worry for Avatar. Watching the performances I just felt like something was missing. The actors just felt detached in their reactions from the scenery. And no, I'm not talking about when they had to interact with the scenery, I mean when they were merely talking to each other. I could just feel like these were simply people standing in an empty room. Perhaps that was due to the actors used, but I'll be interested to see if I get the same feeling from Avatar.