Hmmm... books that have influenced me...
The Bible - I'm a PK. What else can I say?
The Chronicles of Narnia - This was the first book series I read on my own. I've read them several times since then, but I'd say that they fostered a love of reading and stories. I've also always loved (though I now wonder if Narnia started the love) the idea of a parallel world (especially a medieval-ish one) where you could live a life, return to your own world, and not have aged a day. I <3 parallel worlds in general.
The Lord of the Rings - This was the first non-'kiddie' book that I read. I'm a Tolkein-dork to this day and LotR books have their own shelf on my bookcases. This book started my love affair with fantasy books.
Ender's Game - Haha, my grandfather gave me Ender's Game for Christmas when I was in fourth grade. It's still one of my favorite books of all time. It greatly influenced me because, at fourth grade, I didn't feel like 'just a kid'. My life and my concerns felt -just- as important and real as 'adult' problems did and in Ender's Game, the lives of children (who normally would count for nothing) determined the fate of the entire world. It also started my love affair with SF books.
I'd also just entered a new school with higher standards and discovered that I was the Best of all my classmates and hated for it.
The Adventures of Tom Sawyer +
The Adventures of Huckleberry Finn - I still own the beaten up copy I was first given. You can actually take out the first half of Tom's adventures and carry them separately. These books started my interest in faking my own funeral and taught me what 'fun' was. I was far too serious as a child and these books made me smile and chill out a bit.
A Step from Heaven - I read it Sophomore year, and it read like my own autobiography would read from a past life. The main character had a
lot in common with me, enough to be creepy actually, and it's still the book that identifies closest with my life. In the end my hands are worn and scarred, but I would never change them.