For me, chemistry is trust. If you have trust you can risk together. It's like a partnership and it means you can have fun together while jumping off a mountain. I have not always been able to get good trust with an acting partner. One of the best was Juliet Landau; I always felt safe with her. Chemistry has nothing to do with physical attraction - that often gets in the way.

So, I'm going to go over on Angel. Joss is just going to find a way to keep me bleaching my hair, which is fine.

Joss Whedon said to me, 'If you think you are taking over the show, you have got another think coming.' He said, 'You are here only because I don't want to kill a villain off every week. I want my villains to be more interesting and multifaceted and then die.'

I think that there are just people who are hurting other people, sometimes for the best of intentions and sometimes for the worst. In different times in my life, I've been the hero and I've been the villain. I also think that we're all evil sometimes.

Clowns make me... Think.

In Europe they call geeks 'smart people,' and frankly I think we live in a culture that doesn't value intelligence enough; so I am very proud in saying that I am a geek.

I'm not an ad-libber. If I'm asked to ad-lib, I can ad-lib forever and it's really fun to do that, but I find that well-written scripts are put together very carefully. Once you start to ad-lib and add words to sentences, there's a slacking that happens. When it's good writing, it's taut. I'm not judging people who do ad-lib.