Eee, Dragonbreath! :D I need to catch up, I think I've only read the first eight or so -- haven't checked my local library for them since I moved here.

And oh, man, The Princess and the Goblin -- I don't think I've read that in twenty years. I'm never quite sure how I feel about George MacDonald, but he has one hell of a talent for mental images that stick with you, imo anyway.