You always get told how important the premiere and doing the press is, but I have suspicions.

The prosthetics were interesting because the artist was so good that they could just put a Hitchcock mask on me, but you don't want to do that. You're an actor playing Hitchcock, so it's about how much of that you're going to do.

Particularly [Alfred] Hitchcock, who takes his time with everything he says. There's a controlling way in how he speaks because he takes his time to finish all his sentences.

Best ever was filming in Barcelona last year, and I had a couple of scenes with De Niro. He's a very shy man. Speaks so quietly that people tend to bend down and adopt the same tone, almost the same voice, whenever they talk to him - watching, you'd think someone's offering to carry out a hit for him when they're just offering him a cup of coffee.

I've got to tell you, I've played real characters before and people always bring up this word 'impersonation,' and I'm never entirely sure what it means.

You come in as this satellite part of the film [Catching Fire], so I only see Stanley [Tucci] in my scenes. These kinds of movies have so many different components; it's about as different from doing The Girl as you could imagine.

When I told people I was going to be doing the movie and the voice of Dobby, they were kind of awestruck, the people who knew about Harry Potter. I felt rather guilty that I didn't really understand the scale of the job I was about to take on. Now, I am well aware of what I'm doing, and actually, it feels a very serious acting responsibility.