Michael Fassbender is remembering his days as an altar boy at Prince of Peace Church in Fossa, near Killarney. “I was head altar boy, actually, and I was quite good at it,” he says when we meet in London. “I was always interested in religion. But to be honest, when I was a small boy I did find going to church kind of boring. So when I became an altar boy I had stuff to do during Mass, which made it more interesting. And who knows, but maybe, in some ways, I got the first idea of being on stage there.”