Pacific Rim has been hailed for its monstrous scope and visual effects, which bring the battling jaegers and kaijus to life on the big screen. Warner Bros. has released a behind-the-scenes featurette that compares the original live-action shots, set against green screens, with the finished final product that includes all the digital enhancements. Director Guillermo del Toro describes the importance of these effects, and why he chose Industrial Light and Magic (ILM) to bring this amazing world to life. Take a look at behind-the-scenes footage plus interviews with Guillermo del Toro, stars Charlie Hunnam, Idris Elba producer Thomas Tull and more, before seeing this action-thriller in theaters again this weekend.