I still am a geek, I don't think there's anything wrong with it. I see no shame in having an unhealthy obsession with something.

It's very hard to be objective about something you're in, especially when you set it up against things that you experienced as a child.

I still am a geek, I don't think there's anything wrong with it. I see no shame in having an unhealthy obsession with something.

I remember a conversation with my parents about who the people on the TV were, and learning they were actors and they acted out this story and just thinking that was the most fantastic notion, and that's what I want to do.

I often stop when I'm doing something, in the middle of rehearsals or some other job, and I try to take a minute to think "Okay, this might be as good as it gets, so drink it in, appreciate it now". So far, I've been lucky because another job has always come along to equal the last.

Getting the call to be in The Goblet of Fire was like being welcomed into the most exclusive upper circle of some elite actors' club. You sit on set with the cream of the National Theatre and the RSC, all clutching wands or wearing witches' hats.

I'm quite happy to leave it still feeling that way, leave it before it starts feeling like a job. ... I have such fond memories of watching 'Doctor Who' when I was a kid and growing up, that if I've left anybody anywhere with memories as fond, then I feel like I've done my job.