We has already been exposed to Sarah and Duck when we going through the programming on Sprout. (I am still sad that the Wiggles are no longer on Sprout) However, we hadn't really sat down and watched it, particularly not the way you do when you watch a block of episodes on Netflix.
Sarah and Duck is the quiet, dreamy adventures of a quirky little girl, her pet duck, a narrator who might be her dad and a neighborhood of eccentrics. It is more British than Doctor Who.
While we always found it charming, watching the episodes in order revealed to us that Sarah and Duck has an definite continuity with a focus on world building. Individual characters have introduction stories and later stories show Sarah's developing friendships with them. Locations are introduced and revisited.
Taken as one big arc, Sarah and Duck is the story of a little girl exploring the world around her and developing relationships with the people she meets. It is the story of her growing understanding and maturity.
Of course, at the same time, it is a cute little show for toddlers and preschoolers :)
We have had a pretty good run with Sarah and Duck. When dealing with a two-year-old, we know that his interest will wane and we will move on to a new show to relax and decompress him. But his parents are glad to have discovered how much creativity and imagination is really in Sarah and Duck.