(Strangely enough, I got to leave most of the markings in place. My friends have good taste!)
The Foundation Trilogy, Isaac Asimov*
Dune, Frank Herbert
Stranger in a Strange Land, Robert A. Heinlein*
A Wizard of Earthsea, Ursula K. Le Guin*
Childhood's End, Arthur C. Clarke**
Do Androids Dream of Electric Sheep?, Philip K. Dick*
The Mists of Avalon, Marion Zimmer Bradley
Fahrenheit 451, Ray Bradbury
The Book of the New Sun, Gene Wolfe
The Caves of Steel, Isaac Asimov
Children of the Atom, Wilmar Shiras
Cities in Flight, James Blish
Dangerous Visions, edited by Harlan Ellison
Deathbird Stories, Harlan Ellison
The Demolished Man, Alfred Bester
Dhalgren, Samuel R. Delany
Dragonflight, Anne McCaffrey
Ender's Game, Orson Scott Card
The Forever War, Joe Haldeman*
Gateway, Frederik Pohl
Harry Potter and the Philosopher's Stone, J.K. Rowling
The Hitchhiker's Guide to the Galaxy, Douglas Adams*
I Am Legend, Richard Matheson
Interview with the Vampire, Anne Rice
The Left Hand of Darkness, Ursula K. Le Guin*
Little, Big, John Crowley
Lord of Light, Roger Zelazny*
The Man in the High Castle, Philip K. Dick
Mission of Gravity, Hal Clement
More Than Human, Theodore Sturgeon
The Rediscovery of Man, Cordwainer Smith
On the Beach, Nevil Shute*
Rendezvous with Rama, Arthur C. Clarke
Ringworld, Larry Niven
Rogue Moon, Algis Budrys
The Silmarillion, J.R.R. Tolkien
Slaughterhouse-5, Kurt Vonnegut
Snow Crash, Neal Stephenson*
Stand on Zanzibar, John Brunner
The Stars My Destination, Alfred Bester
Starship Troopers, Robert A. Heinlein
Stormbringer, Michael Moorcock
The Sword of Shannara, Terry Brooks
Timescape, Gregory Benford
To Your Scattered Bodies Go, Philip Jose Farmer