My personal favorite is Johan Söderqvist's beautiful score for "Let the Right One In."
Runner ups would be: Human Target, How to Train Your Dragon, The Hobbit, Merlin (Brit series), Doctor Who -Murray Gold scores, Capitan Trueno Y EL Santo Grial (Captain Thunder and the Holy Grail).
I own and have listened to How to Train Your Dragon and I have to say I must be missing something because I didn't think there was anything too special there. That said, I will be fair and tell you I didn't like the movie and I have only heard the score on its own a few times. Maybe with a few more listens...........