"This is a list of the 50 most significant science fiction/fantasy novels, 1953-2002, according to the Science Fiction Book Club. Bold the ones you've read, strike-out the ones you hated, italicize those you started but never finished and put an asterisk beside the ones you loved."
The Lord of the Rings, J.R.R. Tolkien - I liked this once, but tales set in a moral universe, especially those informed by Christianity, now really rub me the wrong way.
The Foundation Trilogy, Isaac Asimov* - I liked this. I can't remember much of it though.
Dune, Frank Herbert - Ehh.
Stranger in a Strange Land, Robert A. Heinlein - I'm not sure I finished this. I can't remember
A Wizard of Earthsea, Ursula K. Le Guin - Can't remember it, know I read it
Neuromancer, William Gibson - Kind of liked it
Childhood's End, Arthur C. Clarke
Do Androids Dream of Electric Sheep?, Philip K. Dick - On my reading list
The Mists of Avalon, Marion Zimmer Bradley
Fahrenheit 451, Ray Bradbury* - Yum
The Book of the New Sun, Gene Wolfe
A Canticle for Leibowitz, Walter M. Miller, Jr.
The Caves of Steel, Isaac Asimov
Children of the Atom, Wilmar Shiras
Cities in Flight, James Blish
The Colour of Magic, Terry Pratchett - I prefer other books in the series..
Dangerous Visions, edited by Harlan Ellison
Deathbird Stories, Harlan Ellison
The Demolished Man, Alfred Bester
Dhalgren, Samuel R. Delany
Dragonflight, Anne McCaffrey - Ehh..
Ender's Game, Orson Scott Card* - A book that's hard not to like
The First Chronicles of Thomas Covenant the Unbeliever, Stephen R. Donaldson - Wanted to comment that this is an awesome title that I've never heard of before
The Forever War, Joe Haldeman
Gateway, Frederik Pohl
Harry Potter and the Philosopher's Stone, J.K. Rowling - On my reading list
The Hitchhiker's Guide to the Galaxy, Douglas Adams* - Another book/series that's hard not to like
I Am Legend, Richard Matheson
Interview with the Vampire, Anne Rice* - A classic
The Left Hand of Darkness, Ursula K. Le Guin
Little, Big, John Crowley
Lord of Light, Roger Zelazny - Pretty good
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 - Pretty decent
Ringworld, Larry Niven - I can't remember it.
Rogue Moon, Algis Budrys
The Silmarillion, J.R.R. Tolkien - Decent, but that whole "Moral Universe" thing again...
Slaughterhouse-5, Kurt Vonnegut - I generally don't like Vonnegut's writing...
Snow Crash, Neal Stephenson* - Great book!
Stand on Zanzibar, John Brunner
The Stars My Destination, Alfred Bester
Starship Troopers, Robert A. Heinlein* - A much better book than movie
Stormbringer, Michael Moorcock
The Sword of Shannara, Terry Brooks - Good book, starts a kind of spotty series
Timescape, Gregory Benford - Not that great.
To Your Scattered Bodies Go, Philip Jose Farmer - I can't remember if I've read this or not