I think it's that if you don't have the visual, you have to infuse the full personality into the voice. Think of Daffy Duck. I mean, what the heck? I was playing around with the Daffy Duck voice today when I was coming back from driving my kid to school.

I had read the Animal House script, and by hook and crook, I finally got an audition. It was a great one. John Landis followed me out into the hallway afterward and said, "I've never done this before, but you've got the job. Now don't tell anyone!" I've never had a director do that. It was one of those Hollywood-dream-come-true stories. They saw me as a surfer or cowboy, not a preppie, but someone begged and borrowed me an audition, and I went in and got it.

I'd come up with one leg in theater, but never my first leg. I loved the camera too much.

There is something about the vocal quality of the actors who can really do it. Jim Burrows, the great sitcom director who directed Will & Grace and Cheers, when an actor comes in to audition for him, he never looks at them. He just listens. Because funny is funny. You can be fooled by the eye, but if your performance is funny to the ear, it will be funny.

The funny thing about The West Wing is - and I don't know what Aaron Sorkin says about it - but I'm convinced it was a comedy. It's a very intellectual and cerebral comedy, but it was SportsNight in the White House. It had an energy and a vitality and an intelligence and a passion that's rare. And it was extremely difficult to do, because they were so demanding about the dialogue.

The great thing about theater is the doing it again and again and again.

I love John F. Kennedy. My mother had been a worker on his campaign and adored him. I was just a kid when he was around. I did a lot of preparation, a lot of research. I can't do him... I sort of get a slight Boston accent, and I tried to get his rhythm. My only fear was that I was too old to play him, because I was much older than he was when he died, so I was concerned about that. But it was one of those, "Oh what the hell, I'm doing this. It's a great part, and I'm going for it."