I've always known her as Tim Burton's muse, and I have to say I love her in his films as well. Even if I don't love the film, her performances are enjoyable. And she kind of nails Bellatrix in Harry Potter. And, I sort of watched Fight Club for the five thousandth time last week and she was incredible in that as well.
|Helena Bonham Carter in Fight Club|
If you take anything from HBC's performances (oh yeah, Big Fish is another I love), it is how to convey emotion without words. She has such a range of expression, both facial and figurative. Watch that. Describe it to yourself. Use it in your own characters, and they just might come alive.