1 Frank Herbert Dune [S1] 1965
2 Orson Scott Card Ender's Game [S1] 1985
3 Isaac Asimov Foundation [S1-3] 1951
4 Douglas Adams Hitch Hiker's Guide to the Galaxy [S1] 1979
5 George Orwell 1984 1949
6 Robert A Heinlein Stranger in a Strange Land 1961
7 Ray Bradbury Fahrenheit 451 1954
8 William Gibson Neuromancer 1984
9 Isaac Asimov [C] I, Robot 1950
10 Arthur C Clarke 2001: A Space Odyssey 1968
11 Larry Niven Ringworld 1970
12 Robert A Heinlein Starship Troopers 1959
13 Philip K Dick Do Androids Dream of Electric Sheep? 1968
14 Aldous Huxley Brave New World 1932
15 H G Wells The Time Machine 1895
16 Arthur C Clarke Rendezvous With Rama 1973
17 Robert A Heinlein The Moon is a Harsh Mistress 1966
18 H G Wells The War of the Worlds 1898
19 Dan Simmons Hyperion [S1] 1989
20 Arthur C Clarke Childhood's End 1954
21 Ray Bradbury [C] The Martian Chronicles 1950
22 Orson Scott Card Speaker for the Dead [S2] 1986
23 Kurt Vonnegut Slaughterhouse Five 1969
24 Neal Stephenson Snow Crash 1992
25 Joe Haldeman The Forever War 1974
26 Niven & Pournelle The Mote in God's Eye 1975
27 Ursula K Le Guin The Left Hand of Darkness 1969
28 Orson Scott Card Ender's Shadow [S1] 1999
29 Isaac Asimov The Caves of Steel 1954
30 Jules Verne 20,000 Leagues Under the Sea 1870
31 Philip K Dick The Man in the High Castle 1962
32 Frederik Pohl Gateway 1977
33 Roger Zelazny Lord of Light 1967
34 Madeleine L'Engle A Wrinkle In Time 1962
35 Michael Crichton Jurassic Park 1990
36 Stanislaw Lem Solaris 1961
37 Kurt Vonnegut Cat's Cradle 1963
38 Robert A Heinlein Time Enough For Love 1973
39 Alfred Bester The Stars My Destination 1956
40 Neal Stephenson Cryptonomicon 1999
41 John Wyndham The Day of the Triffids 1951
42 Anthony Burgess A Clockwork Orange 1962
43 Daniel Keyes Flowers for Algernon 1966
44 Carl Sagan Contact 1985
45 Isaac Asimov The Gods Themselves 1972
46 Philip K Dick UBIK 1969
47 Vernor Vinge A Fire Upon the Deep 1991
48 Walter M Miller A Canticle for Leibowitz 1959
49 Isaac Asimov The End Of Eternity 1955
50 Michael Crichton The Andromeda Strain 1969
51 Kim Stanley Robinson Red Mars [S1] 1992
52 Mary Shelley Frankenstein 1818
53 Neal Stephenson The Diamond Age 1995
54 L Ron Hubbard Battlefield Earth 1982
55 Jules Verne Journey to the Center of the Earth 1864
56 Kurt Vonnegut The Sirens of Titan 1959
57 Iain M Banks Player Of Games [S2] 1988
58 Niven & Pournelle Lucifer's Hammer 1977
59 Greg Bear Eon 1985
60 Ursula K Le Guin The Dispossessed 1974
61 Peter F Hamilton The Reality Dysfunction [S1] 1996
62 David Brin Startide Rising [S2] 1983
63 Philip Jose Farmer To Your Scattered Bodies Go 1971
64 Alfred Bester The Demolished Man 1953
65 Gene Wolfe The Shadow of the Torturer [S1] 1980
66 Harry Harrison The Stainless Steel Rat [S1] 1961
67 Iain M Banks Use of Weapons [S3] 1990
68 Margaret Atwood The Handmaid's Tale 1985
69 Philip K Dick The Three Stigmata Of Palmer Eldritch 1964
70 David Brin The Uplift War [S3] 1987
71 Connie Willis Doomsday Book 1992
72 Arthur C Clarke The City and the Stars 1956
73 Robert A Heinlein Citizen Of the Galaxy 1957
74 Robert A Heinlein The Door Into Summer 1956
75 Robert A Heinlein Have Space-Suit - Will Travel 1958
76 Robert A Heinlein The Puppet Masters 1951
77 C S Lewis Out of the Silent Planet [S1] 1938
78 John Wyndham The Chrysalids 1955
79 H G Wells The Invisible Man 1897
80 Clifford Simak Way Station 1963
81 Ursula K Le Guin The Lathe of Heaven 1971
82 Dan Simmons Ilium 2003
83 Julian May The Many-Colored Land [S1] 1981
84 Philip K Dick A Scanner Darkly 1977
85 Edgar Rice Burroughs A Princess of Mars [S1] 1912
86 Mark Twain A Connecticut Yankee in KA's Court 1889
87 E E 'Doc' Smith Grey Lensman [S4] 1951
88 William Gibson [C] Burning Chrome 1986
89 David Brin The Postman 1985
90 Alastair Reynolds Revelation Space [S1] 2000
91 Orson Scott Card Xenocide [S3] 1991
92 Edwin A Abbott Flatland 1884
93 Arthur C Clarke The Fountains of Paradise 1979
94 Greg Bear Blood Music 1985
95 Clifford Simak [C] City 1952
96 John Brunner Stand on Zanzibar 1969
97 Robert A Heinlein [C] The Past Through Tomorrow 1967
98 Stanislaw Lem [C] The Cyberiad 1974
99 Theodore Sturgeon More Than Human 1953
100 Philip K Dick VALIS 1981
and if you can't find a good read in that lot it's time to switch the telly back on.