Originally, I thought, 'Gollum's such a fantastic character, why are you doing him CG? Surely you need to be able to humanise him as much as possible - he's so full of pathos and real emotion.'
What's fantastic is that there's a real growing appreciation for performance-capture technology as a tool for acting.
In terms of animation, animators are actors as well. They are fantastic actors. They have to draw from how they feel emotionally about the beat of a scene that they're working on. They work collaboratively.