When Isao Takahata's "The Tale of Princess Kaguya" lost out to "Big Hero 6" in the competition for Best Animated Feature at the Academy Awards last year, it was a reminder of how thoroughly 3-D computer animation has eclipsed more traditional techniques. In the 15 years since the award was introduced, it's only been given to non-CGI films twice: Hayao Miyazaki's "Spirited Away" in 2003, and Nick Park and Steve Box's "The Curse of the Were-Rabbit" in 2006.