I found this channel on YouTube. It has a really decent collection of documentaries on the history of Sweden in Swedish. Its a really good channel if you are interested in the country's history or even if you just want to pick up some extra words in a more formal context.
Another nice series about Swedish (food-)history is "Historieätarna". It's informative and also quite entertaining. Some of you might know the leading actors from 2015s julkalendern "1000 år till julafton". Check out this youtube-channel to watch the first two seasons of Historieätarna: