It's funny because 'The Book of Mormon' is 'The Book of Mormon' now. When I was doing it at the very beginning and I was a part of it for four years and always believed in it I never really knew if it was going to be more than a convention for 'South Park' fans.
I've never let producers tell me what to do. Even when I was making television I always did what I wanted to do and if I couldn't I didn't do it. It was a freedom that these days young directors starting out don't have.