Having worked on "South Park: Bigger, Longer & Uncut" in 1999, the duo were more familiar with animated characters. Parker and Stone talk about dealing with the casting process and adjusting to the world of musical theatre.
Josh Gad ("The Daily Show with Jon Stewart") and Andrew Rannells (Jersey Boys) star as the unlikely pair of Mormon missionaries in the musical playing at The Eugene O'Neill Theatre.
To watch the interview, click here.
-- Michael C. Gioia