When Marvel put together Ultimate Spider-Man and someone came up with the idea of having Principal Coulson, they said, "Do you want to do the voice?" I thought, "I have to do the voice!" Because I have a daughter and we watch some cartoons, I couldn't bear the idea of tuning in and hearing somebody else's voice.

It's a little strange, after all these years of working on camera, but once you start to watch the other people who do this a lot and realize how much of what you're doing has to just come through your voice, I found it really interesting.

With the tone of the show, like a lot of the films, the Marvel creative team has found a way to bridge really exciting stuff that has real stakes. They balance some of the action stuff that the fans of the comics really want to see with characters that people can relate to and who are very human.

There's very few people, who really thrive creatively under great stress and conflict.

The technology actually seemed to come at just the right time to make the Hulk - Mark Ruffalo was really able to play both characters.

I was really sad after 'The Avengers' when I realized I was not going to have a part in 'Thor 2' or 'Captain America: The Winter Soldier.' But I'm not arguing with my fantastic plane and my really cool car.

As a fanboy myself, one of the fun things about the gig has been every time I get a new script, I get to find out more about his day - to-day life and what goes on and what his relationships are.