Q: Why do you think Tim always casts you as witches or murderers?
Helena: I don’t know… it’s exciting. A chimpanzee. He’s broadened my range – and my head size. He obviously thinks my head’s too small in real life and he’s been dying to make it bigger for a long time. But I love it… and I love the fact he’s given me the chance to transform again. Right from the start, before he even knew me, when he phoned me up for Planet of the Apes, he said he had this strange hunch that I’d be interested in playing a chimpanzee. He had this hunch that I like to transform myself as an actress.

[read the rest of the interview here]