He is a very easy-going guy and he finds in jokes with people. He is not someone you have to try talk to, he is easy to talk to. We had one joke on the set but I can't really remember what is now but he is a great guy to work with.

And Robert really rebooted the whole genre with Iron Man. And he really embraced it. He takes a star persona into the public, so when he shows up somewhere publicly, he’s actually playing Stark—he’s not Robert Downey. He’s fortifying that image both onscreen and offscreen, and he loves doing it.

Robert can take a two-minute scene and take you through five different arcs of emotion as he takes himself through that. Which is very much like life, but not very much like what we usually see in acting. Many actors are more in the tradition of De Niro, where watching the performance is part of the pleasure, being aware that that's the great character that they built. Robert's one of those rare actors who when you watch him, you go: Oh, he must just kind of be like that part. And it's only when you see him play 15 completely different roles that you realize, 'Well, wait a minute, he can't be like all these people'.