The script for Iron Man (2008) was not completely finished when filming began, since the filmmakers were more focused on the story and the action, so the dialogue was mostly ad-libbed throughout filming. Director Jon Favreau acknowledged this made the film feel more natural. Some scenes were shot with two cameras, to capture lines improvised on the spot. Robert Downey, Jr. would ask for many takes of one scene, since he wanted to try something new. Gwyneth Paltrow, on the other hand, had a diffi