"Broster Broster!"
has been called the most reviled Christmas calendar of all time and was about the Wikmansson family who are expecting children and fighting against buying hysteria and environmental degradation.
And it is far from the only one of SVT's Christmas calendars that has aroused commitment and debate.
But what makes some Christmas calendars unforgettable?
Johanna Gårdare, head of department at SVT Barn, sees some common denominators.
In the video above you can see which ones.