I always loved the challenge. When something new happened, I always used to get quite excited.

[on playing Walter] It was wonderful to be able to play a character who had so many colors and who was able to play comedy, to play incredibly vulnerable, which he did a lot of the time, to play the love story, and to play the relationship with the son, which is quite unusual. That's a gift to me, as an actor. It was like everything you could possibly hope for, over five years. So, I was a very lucky actor.

You're always working with the relationships. It's pretty demanding, but then again I love that.

I think main storylines are what always intrigued me, with those that were the relationships between the characters against whatever backdrop, whether it was in an ordinary universe or a universe in the future.

What I've observed is that television in the last decade has increased to something that's almost unrecognizable. They are feature films. That's a huge shift, and it's something the audience expects. They still may want to watch their half-hour sitcom, but when they watch scripted drama, they expect the standard.

I was a theater man, so I was never in the situation of being a handsome Hollywood leading man, and then having to age.

We often get pigeon-holed as a tough guy, or whatever else. I've been pigeon-holed as a heavy and serious, and almost a baddy, but not quite a baddy, over the years of my work in television, particularly.