The Oz books! All forty of them! Loved them.

But before that, Alice's Adventures in Wonderland and Through the Looking-Glass and What Alice Found There.

And then there was Jane Yolen's Pit Dragon Trilogy (which now has a fourth book!) and Ursula k. LeGuin's EarthSea books and Encyclopedia Brown and the Choose Your Own Adventure books and the Bunnicula books and . . . I was a book worm!