24 Hour movie star on TV

I don't recall anyone here mentioning this so I will. I was watching the chat show 'Johnny Vaughan Tonight' on BBC a week or so ago and John Simm, who plays Barney in 24HPP, was a guest. Apart from the host saying that they were 'not allowed' to show a clip Vaughan asked Simm about what it was like playing someone else who was a real alive person. He was explaining about getting the voice right at which point he did his Barney voice. I have to say it was chillingly spot on; when the movie is out we'll all be impressed. Simm got a round of applause for doing a line which he said he'd heard Barney say, at which point Vaughan noted that it was amazing to get applause for doing an impression of someone who most people had never heard speak! Wish I'd taped it.