I listed a few you didn't mention, all Kiwi children's classics - but really there's too many to name. I'd discovered historical novels by the time I was six, much to my parents' dismay (they're almost as bad as Mills & Boone for softcore porn, though I didn't understand most of those bits 'till I was a little older) and when I was eleven I found the sci-fi/fantasy section at the library and didn't look back. I was also a devout reader of non-fiction as a child; among my favourites were Bill Bryson, Carl Sagan, and anything up-to-date on dinosaurs.

I remember that when I met my boyfriend I was horrified to discover he'd never read the Narnia books. I just didn't understand how someone could get to be twenty and have not encountered them. He's read them now, of course. *g*