Nolan says romantic comedy genre scares him

Christopher Nolan said he would be 'terrified' to direct a romantic comedy.

Nolan called romantic comedies 'incredibly difficult' and one of the hardest genres.

Nolan's adaptation of 'The Odyssey' was filmed across six countries over 91 days using two million feet of IMAX film.

The film cost around $250 million and used a 60-foot animatronic puppet.