Afarensis is a 3.5-2.8 million year old hominin from the Kada Hadar member of the Hadar formation in the Middle Awash, Ethiopia. He is approximately 41 inches tall, weighs approximately 60 pounds and has a cranial capacity of a whopping 410 cc (approximately). Afarensis is currently considered to be transitional between apes and humans and displays some traits of both. Since he spends a lot of time on the couch watching monster movies, some observers question whether he is an obligate biped (although no one has observed him climbing a tree). He also has a blog called 
Like the rest of my Sciblings I follow the herd and do the "The Most Significant SF & Fantasy Books of the Last 50 Years, 1953-2002" meme... The books I have read are in Bold.
The Lord of the Rings, J.R.R. Tolkien
The Foundation Trilogy, Isaac Asimov
Dune, Frank Herbert
Stranger in a Strange Land, Robert A. Heinlein
A Wizard of Earthsea, Ursula K. Le Guin
Neuromancer, William Gibson
Childhood's End, Arthur C. Clarke
Do Androids Dream of Electric Sheep?, Philip K. Dick
The Mists of Avalon, Marion Zimmer Bradley I thought this one was overrated. I liked the Brass Dragon much better.
Fahrenheit 451, Ray Bradbury
The Book of the New Sun, Gene Wolfe Overrated
A Canticle for Leibowitz, Walter M. Miller, Jr. Some of Miller's stuff is quite good, but I didn't much care for this one.
The Caves of Steel, Isaac Asimov
Children of the Atom, Wilmar Shiras
Cities in Flight, James Blish
The Colour of Magic, Terry Pratchett
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 First Chronicles of Thomas Covenant the Unbeliever, Stephen R. Donaldson One of my favorite authors, although I will say the second chronicles sucked.
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 OVERRATED!
The Left Hand of Darkness, Ursula K. Le Guin
Little, Big, John Crowley
Lord of Light, Roger Zelazny Another of my favorite authors.
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 As far as I am concerned anything by Cordwainer Smith is a classic. He is up there with Donaldson and Zelazny
On the Beach, Nevil Shute I never finished this, got bored.
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 Blech! I tried to get my money back after about ten pages!
Timescape, Gregory Benford
To Your Scattered Bodies Go, Philip Jose Farmer
Overall, not a bad list. I think I would have included The Alien Way by Gordon Dickson.
Update 1:
In thinking about it some more, I would have also added The End of the Dream by Phillip Wylie
Comments
Interesting that Alfred Bester's "The Stars My Destination" was in the list, but almost nothing by Ray Bradbury! Of course, Asimov is highly significant, as are some of the other authors in some ways. I started reading many of these authors when I was about 9 years old. I just borrowed my brother's science fiction stuff. And I loved it. I've loved s-f ever since. That's why I'm now writing a Great Medieval Science Fiction Masterpiece With Neandertals. It's kind of Tolkienesque in its "epic" scope, but the Neandertal characters are "Harry Potteresque" And I should also mention that I read "The Stars My Destination" really early on, and enjoyed it immensely(and there were several rereads). YOu and I disagree on things like "The Sword of Shannara". It's not great literature, but it was quite enjoyable, IMO. I liked "Lord of the Rings", but unlike many people I don't rate it as highly as some do. As for Marion Zimmer Bradley, well, she actually started out being an interesting writer, but then got herself all twisted up into a knot about "organized religion", which showed, and very obviously in "The Mists of Avalon". And besides, I *hate* "Arthurian" rewrites! They should have left this stuff to Malory and Tennyson.
Anne G
Posted by: Anne Gilbert | March 11, 2007 2:38 PM
The obvious book to include from Bradbury is The Martian Chronicles, but since it came out over 50 years ago, it doesn't qualify.
Posted by: Kevin W. Parker | March 11, 2007 2:44 PM
I would have went with Dandelion Wine or Something Wicked This Way Comes for Bradbury. On Bradley, yeah I agree. Unfortunately, I have kind of stopped reading fiction for some reason so I am not familiar with Gibson and have only read one novel by Stephenson (that I didn't much care for). When I was reading a lot of fiction I tended to gravitate towards things like the Lensman series or Venus Equilateral and a lot of the older SF and Fantasy writers (and Lovecraft, who doesn't seem to on the list).
Posted by: afarensis, FCD | March 11, 2007 4:32 PM
I've read all but 6 14 40 43 and 49. However, a lot of them I didn't particularly care for. I don't read much scifi any more, though I'm not sure why - though the two statements are probably connected. But of the authors I do still read, none are on this list. Guess that makes me out of step or something.
Posted by: The Ridger | March 11, 2007 5:27 PM
Clifford D. Simak: Cosmic Engineers - read that back in the early '50s. Started me on a life long love affair with Science Fiction (and Fantasy, later). Like many of you, for some reason I don't read much SF anymore - perhaps because some of those dreams never came true. However, I'm 65 years old but part of me is still a 10 year old boy. Give me a rocket ship with an unlimited power supply, a joystick, an upper speed limit of C+ and watch me go!
In the late 80's I asked one of my eldest daughter's classes who would join me on a trip to Alpha Centauri. After explaining everything, the answer was zero. Sad that I had to explain and sad that no one would go.
Posted by: Oldfart | March 13, 2007 11:54 PM
The first book I read by Simak was City absolutely loved it and eagerly devoured everything of his I could get my hands on. That is sad that no one knew what Alpha Centauri was, much less would go there if they had the chance.
Posted by: afarensis, FCD | March 14, 2007 12:09 AM