Damon said Blomkamp is what drew him to the film: "After I saw `District 9,' if Neill had called me out of the blue and said, `This is Neill Blomkamp, will you be in my next movie?'
"There's an element of salesmanship about films that sometimes makes me feel a bit distant as a fan," he said. "But launching footage at Comic-Con is ... actually a true, honest thing. There's no lies about it. It's just completely fans wanting cool footage, so I'm OK with it."