Sometimes people get really sniffy about the films you choose if you've done more dramatic projects or you're classically trained.

I started to itch to do a play again and 'Macbeth' came to the surface in my mind. I never thought I would do it in a conventional way. A sweaty Macbeth with blood on his arms coming in fresh from the battle doesn't interest me.

I think American actors are much more intimidated by Shakespeare.

Once in a while it's good to challenge yourself in a way that's really daunting.

My feeling about work is it's much more about the experience of doing it than the end product. Sometimes things that are really great and make lots of money are miserable to make, and vice versa.

Often for me, if I hear a song I know, it clicks for me and I hear it in a different way and I think, "I could sing that song. I've got something to say about that song. Wanting to connect with an audience and wanting them to rethink songs; it is actually important to do songs they're familiar with. Also, I love those songs. In a way, I think I've changed people's perceptions of what a cabaret show like this could be.

I actually find in America, there's a slight snobbery about actors who go back and forth between big heavy dramas and popcorn fare. That always intrigues me, because that doesn't exist in the same way in Britain. And I imagine it would be worse. In terms of the sort of class, and the sort of snobby, slightly on the back-foot thing Britain has. But it's much more prevalent in America. I'm really intrigued by it. I don't know why that is. But I'm aiming to break down those barriers by being in a Shakespeare film and a Smurfs film within six months of each other.