It's very good, very well done and emotionally involving. Much better than the usual BBC stuff. The flying scenes are impressive - there is a good Blog on the BBC site explaining how they did them, if you want to see behind the curtain and spoil the magic.
And - Sam Heughan - oh yes please. I may just have to stalk him for a while. He's the blond - The pic is NOT from First Light, don't worry!