This was a fun question, but also very hard to just pick one of the pavilions...
I feel a bit obligated to say NORWAY, because... well we are from Norway and I think they have made it very authentic to the OLD NORWAY
We live just outside Oslo (the capital) and we often visit AKERSHUS (the real one, that is not really a castle but a fort)
On our independence many people wear BUNAD (the Norwegian folk costumes) and sometimes at Christmas, Weddings etc.
We don`t have trolls walking around in our streets (not polar bears eighter) "Lol", but Trolls are a big part of our "history/folk tales
But, I also think it is a bit to much Frozen now... we miss the old ride so much, even if it was a bit outdated.
Well, enough with the Norway talk from my side....but I am glad so many of you like the Norwegian pavilion (Thank you)
I think ALL the pavilions has a special place in my heart... I LOVE the Voices of Liberty at the American pavilion.... they are a "must" for us every trip.
So many great places and countries... I think that is what Epcot feels so special to me.....