To learn a little about the dyfunctional and yet hilarious relationships between the Nordic countries, you could do worse than check out the deviantart page, Scandinavia and the World. Serious issues such as the Olympics, lutefisk, saunas, historical invasions, and the location of Santa are addressed (with the occasional guest appearance of America, Canada, Germany, and others)
Oh, and it's not entirely safe for work.
Thanks to
ironlord for the link to this wonderful comic.