I love talking to Mark Henn, one of the greatest animation artists of all time. And I loved seeing his work in "Moana," Disney's new animated musical set in Polynesia. Henn worked on the animated tattoos sported by -- and interacting with -- Maui, a demi-god played by Dwayne Johnson.
How did the idea of animating Maui's tattoos come about?
First off, there's [co-directors] Ron Clements and John Musker. Most of their films have...