You should definitely read Lust Over Pendle :-) It's one of my favourite fics ever; the first one I read that made me go "Oh, but ... wow. Why isn't this writer selling books? How awesomely generous to do this instead."

Narcissa is marvellous in it, but it's also the definitive Draco/Neville. Not that there are many Draco/Neville fics, but if there were hundreds it would still be the definitive one :-)

who has been known to say "Oh that's absurd, I'll just call the Archbishop."

I really love that image.