@Mattie:

You've read The Brothers Karamazov?! How old are you? My mom won't let me read it (she has a copy) until I'm 16!

There are too many for me, sorry if I list more than five.

Deep and Dark and Dangerous by Mary Dowing Hahn

Wait till Helen Comes by Mary Dowing Hahn

Heaven Looks A Lot Like the Mall by Wendy Mass

My Life in Pink and Green by Lisa Greenwald

Beswitched by Kate Saunders (I didn't finish it but it is amazing!

Every The New Adventures of Mary-Kate and Ashely book by ? (I know it's for littler kids,but they're awesome!)

Oh, there are a lot, but I narrowed it down to six. Told ya I had a lot? 

I have more favorite authors than books, but I love works by:

Suzanne Collins

Rebecca Stead

Rick Riordan

J.R.R. Tolkein

Psuedonymous Bosch

Kathryn Lasky

Trenton Lee Stewart

Angie Sage

Avi

C.S. Lewis

Daniel Pinkwater

***

I know this is more than five, but it's sooo hard.  If you want to be exposed to different authors, try some of the Guys Read series.  It sounds really dumb, but the short stories are good.

Here are mine (so hard to choose!!!! :()

1. The Sheild, the Sword, and the Crown Trilogy by Hilary Bell

2. The Tapestry Series by Henry Neff

3. The Girl Who Circumnavigated Fairyland in a Ship of Her Own Making by  Catherynne M. Valente

4.Percy Jackson and The Olympians by Jenny Nimmo

5. The Companion's Quartet by Julia Goldling

and like ten hundred others (it was so hard to choose, I needed 1, 2, 3, and 4, but I had to pick between Charlie Bone, The Enchanted Forest Chronciles, When You Reach Me, and The Companion's Quartet [they won] oh, and The Cronus Chronicles)