Yet Another SFF Top 50 List

Ones I've read are in bold type:

1 Frank Herbert; Dune
2 Orson Scott Card; Ender's Game
3 Isaac Asimov; Foundation
4 Douglas Adams; Hitch Hiker's Guide to the Galaxy
5 George Orwell; 1984
6 Robert A Heinlein; Stranger in a Strange Land
7 Aldous Huxley; Brave New World
8 Ray Bradbury; Fahrenheit 451
9 Isaac Asimov; I, Robot
10 William Gibson; Neuromancer
11 Robert A Heinlein; Starship Troopers
12 Larry Niven; Ringworld
13 Arthur C Clarke; 2001: A Space Odyssey
14 Philip K Dick; Do Androids Dream of Electric Sheep?
15 H G Wells; The Time Machine
16 Arthur C Clarke; Rendezvous With Rama
17 H G Wells; The War of the Worlds
18 Arthur C Clarke; Childhood's End
19 Dan Simmons; Hyperion
20 Robert A Heinlein; The Moon is a Harsh Mistress
21 Kurt Vonnegut; Slaughterhouse Five
22 Orson Scott Card; Speaker for the Dead
23 Joe Haldeman; The Forever War
24 Ray Bradbury; The Martian Chronicles
25 Niven & Pournelle; The Mote in God's Eye
26 Neal Stephenson; Snow Crash
27 Ursula K Le Guin; The Left Hand of Darkness
28 Orson Scott Card; Ender's Game
29 Isaac Asimov; The Caves of Steel
30 Frederik Pohl; Gateway
31 Madeleine L'Engle; A Wrinkle In Time
32 Roger Zelazny; Lord of Light
33 Philip K Dick; The Man in the High Castle
34 Jules Verne; 20,000 Leagues Under the Sea
35 Stanislaw Lem; Solaris
36 Neal Stephenson; Cryptonomicon
37 Isaac Asimov; The Gods Themselves
38 Philip K Dick; UBIK
39 Mary Shelley; Frankenstein
40 Robert A Heinlein; Time Enough For Love
41 Anthony Burgess; A Clockwork Orange
42 Alfred Bester; The Stars My Destination
43 Michael Crichton; Jurassic Park
44 Walter M Miller; A Canticle for Leibowitz
45 Isaac Asimov; The End Of Eternity
46 John Wyndham; The Day of the Triffids
47 Daniel Keyes; Flowers for Algernon
48 Kurt Vonnegut; Cat's Cradle
49 Vernor Vinge; Fire Upon the Deep
50 Niven & Pournelle; Lucifer's Hammer

This list comes from a site which claims it to be "A statistical survey of the all-time Top 100 sci-fi books". I've listed the top 50.