Watership Down

Eleanor Arnason:

Ring of Swords

Isaac Asimov:

Robots of Dawn
The Foundation novels

Lois McMaster Bujold

Cordelia's Honor
... and everything else Bujold has written

Emma Bull

War for the Oaks

Octavia Butler:

Parable of the Sower

Orson Scott Card:

Songmaster
Ender's Game & Shadow of the Hegemon
The Worthing Saga

C.J. Cherryh:

Cyteen
Downbelow Station

Pamela Dean:

Tam Lin

Jean George:

My Side of the Mountain
Julie of the Wolves

Carolyn Ives Gilman:

Halfway Human

Nicola Griffith:

Slow River

Robert Heinlein:

The Moon is a Harsh Mistress
Friday

Frank Herbert:

Dune

P.C. Hodgell:

Dark of the Gods

Robin Hobb:

The Liveship Traders

Monica Hughes:

Devil on my Back

Guy Gavriel Kay:

Tigana
A Song For Arbonne

M. M. Kaye:

The Ordinary Princess

Rudyard Kipling:

Kim

Nancy Kress:

Beggars in Spain

Mercedes Lackey:

By the Sword

Sharon Lee:

Partners in Necessity

Anne McCaffrey:

Crystal Singer
Nerilka's Story
The White Dragon
Dragonsinger/song
The Ship Who Sang/Searched

Robin McKinley:

The Blue Sword
The Hero and the Crown
Beauty

Judith Moffett:

Pennterra
The Ragged World
Time, Like an Ever-Rolling Stream

Robert O'Brien:

Mrs. Frisby and the Rats of NIMH

Gary Paulsen:

Hatchet

Kim Stanley Robinson:

Antarctica

Carl Sagan:

Contact

Melissa Scott:

Trouble and Her Friends

Charles Sheffield:

Cold as Ice
The Ganymede Club
Dark as Day

Joan Slonczewski:

A Door into Ocean
Daughter of Elysium
The Children Star
Brain Plague

Judith Tarr:

Alamut
Ars Magica
The Hounds of God
The Dagger and the Cross

David Weber:

On Basilisk Station
... and all of the rest of the Honor Harrington novels

Terri Windling:

The Wood Wife