As part of marketing for the film, in August 2009, people were allowed to enter a contest to win a trip to Wellington, for the film's New Zealand premiere on December 14, 2009. The offer included, if the winner lived outside of Wellington, one night's accommodation and a voucher for flight or petrol to Wellington. A teaser trailer was released in August 2009, days before the film's official trailer. The official trailer debuted on the television series "Entertainment Tonight" and was released online shortly afterwards. In August 2009, Jackson offered a "behind-the-scenes look" at the film and discussed elements (mainly violence) in the film's plot line.