Well, it's not a single video but rather a channel that I enjoy and I'd imagine many people liking Eurovision because of all the different cultures would be interested in, Geography Now! The guy running it makes semi-comedic videos summing up all the countries in the world in alphabetical order, with introduction to their peoples, nature, international relations and more; I discovered it through the Estonia video when they were at G or H. The most recent episode is Samoa and I guess several people on this forum might be interested in the upcoming San Marino episode
They also make "filler week" episodes on some topic releated to geography, like culturally similar regions, subdivisions/overseas territories of countries, how something politically topical relates to geography (like Catalonia or the Kurds) and even stuff like World Cup and Eurovision (although, being American and not familiar with ESC, he seems to have gotten most of his information about it from the British point of view and there's a bunch of comments telling him there's more to ESC than just gimmicks).
Here's a playlist consisting all the main country episodes so far:
All the episodes of countries Listed A-Z!
www.youtube.com