I find it very strange doing voiceover stuff, because you find you have to enunciate and make stupid faces in order for the point to make sense, because it's playing against the deadpan Simpson face. If you're just speaking in the regular way you speak, it will sound really boring.
It's sort of a meat market, the whole awards thing, and I don't think you can predict it anymore - who's going to like what you've done, if it's worthy or not. And hopefully, that's not why you make a film, because if you're distracted by that, or only striving for that, you don't do it justice.
My objective is that I don't try to do the same thing. I try not to emulate something I've done before. And, I'm a real people watcher, so I like trying to play characters that are as diverse from each other as possible, simply because it's more fun for me, actually.
Americans are a lot more open, of course. There's something more declamatory in the way you express emotions. It's a stereotype but it's true. British people can appear repressed in expressing emotions. Not very good at self-evaluating, or affirming situations, touching, anything like that.