Jon: Less responsibilty in action
Iron Man 2 director Jon Favreau has said it's easier making action movies as the special effects do all the work.
The 43-year-old actor and director's comic book movies have been a box office smash, but he has played down the work required to make them.
Jon told The Guardian: "You have less responsibility for those scenes because the audience is just waiting for the next thing to blow up."
He added: "If you can just go beyond what the audience is expecting, then you've got something. I love the low bar set by genre films."
Iron Man is not in 3D, but Jon's next project, sci-fi western Cowboys And Aliens may be.
He said: "I'm realistic about where I am. I'm not the edgy new guy. And I'm not an established lion like the guys from the generation above me. But I've made enough movies to know what I'm doing. I'm flexible. I'm open to 3D, to CGI, to pushing the limits of new technology."
The Swingers star likes to mock himself by cameoing in the Iron Man movies as the super hero's bodyguard.
He joked: "You've got to take the p**s out of yourself if you are going to put yourself in your own movie."
But Favreau is putting dirceting before his acting career now.
He said: "I'm not doing so much acting any more. "I have to focus on things that are most important. And directing is the thing I enjoy the most."