Her film career has included Billy Elliot, Calendar Girls and Mamma Mia!.
But why, oh why, does she live in the country, getting ''stuck into rural life'', as she puts it?
Why?!
The latest series of Who Do You Think You Are?, that show that climbs fearlessly into family trees, may provide an answer.
Walters, it turns out, is related to Irish tenant farmers, who, she discovers, fought against the foreign ownership of their land by moneyed English types.
It all makes sense.
Brian Blessed and Billy Connolly are two others who star in the genealogist community's favourite show, which is beginning this Friday on BBC Knowledge.
Sky TV is also thoughtfully reprising some good shows this month, with Box Set Saturdays on SoHo showing everything from the first series of True Detective to the recently finished final series of Mad Men.
Look out for The Casual Vacancy, if you haven't seen it.
Based on a book by J. K. Rowling, it follows the often nefarious activities of people in a small, picturesque, but in many ways compromised English village, after a parish council member unexpectedly dies.
The resultant bitter competition for the role which would make all the difference in a decision on local development brings into the open the state of war that exists between teenagers and parents, wives and husbands, rich and poor.
It's funny, moving, well poignant, and has more pathos than you can point a stick at.
Even better, it has a sort of morally ambiguous ending, where good people lose, and bad people lose, too.
It's quite a lot like life, while at the same time being television.
The three-part mini-series ended last week on SoHo, but will play back-to-back on June 6, and is well worth a look.
Any planning for this month's viewing should probably include marking June 21 in your diary to keep an eye out for some fairly alarming news.
On Sky's Vibe channel, The Vikings are Coming (quite regularly, apparently) tells the story of the rise of Denmark as the new sperm capital of the world.
In the United Kingdom alone, the number of women buying Danish sperm has grown 40% every year since 2005.
That's all very well, however the Vikings were downright bad eggs who cut a swathe through Europe from the eighth to the 11th centuries.
They made up the sports of raiding and pillaging, and were quite ruthless, I understand, when it came to invading England in their ships.
What next?
