Matt Damon a.k.a. Jason Bourne incarnate, doesn't outright condemn movie violence, but he is a little picky when it comes to scripts that use it. Though he's appeared in countless action films, the Elysium star told The Independent that since his mother - a lecturer in child psychology - specialised in teaching "non-violent conflict resolution," it has affected his choice of scripts. "Now I always look at the violence [in a script]. I don't want it to be gratuitous. Because I do believe that has an effect on people's behaviour. I really do believe that. And I have turned down movies because of that."