My favourite is, quite surprisingly, Spain.
I've been asking myself why this ended up as being my number 1 out of 39 songs, almost by accident... I haven't found an answer yet, except that I think it's a decent song, with a beautiful atmosphere and uplifting lyrics. I find myself listening to it with much pleasure, whilst other songs in my top 10 get irritating or boring if you listen to them too often (like Finland or Greece).
It's even more surprising to me as Spain is by far my least favourite Big 5 country (and one of my least favourite ESC countries overall) if I go by my votes in Matt's Big Tournament.