The '80s movie star, 49, plays a countess on the hit PBS drama, also on DVD.
WHAT DREW YOU TO DOWNTON ABBEY?
There are all these people-a massive staff of servants living downstairs, an aristocratic family living upstairs-bumping against one another in this great big aristocratic house in the country. But their lives are completely separate.
HOW'S LIFE IN LONDON?
I've been here 18 years. There's something about the inherited cultural history of the country that is peaceful. As the years have gone by I've become more appreciative of the atmosphere that is surrounding my kids [Matilda, 17, and Grace, 13] as they grow up.
DO YOUR KIDS HAVE BRITISH ACCENTS?
Yes. It makes them appear to their American cousins that they are well-educated and well-behaved, but that's not always true.
WARY ABOUT TURNING 50 THIS YEAR?
I'm so much happier, freer, more liberated than I've ever been. Bring it on, I say!