Seems like we’ve been here before. NPR has published a list of their top 100 SF and Fantasy books, reprinted here with the one’s I’ve read marked with a “+” (46 total, although I suspect I read a couple of others and just can’t remember). How many have you read?
+ 1. The Lord Of The Rings Trilogy, by J.R.R. Tolkien
+ 2. The Hitchhiker's Guide To The Galaxy, by Douglas Adams
+ 3. Ender's Game, by Orson Scott Card
+ 4. The Dune Chronicles, by Frank Herbert
5. A Song Of Ice And Fire Series, by George R. R. Martin
+ 6. 1984, by George Orwell
+ 7. Fahrenheit 451, by Ray Bradbury
+ 8. The Foundation Trilogy, by Isaac Asimov
+ 9. Brave New World, by Aldous Huxley
+ 10. American Gods, by Neil Gaiman
11. The Princess Bride, by William Goldman
12. The Wheel Of Time Series, by Robert Jordan
+ 13. Animal Farm, by George Orwell
+ 14. Neuromancer, by William Gibson
+ 15. Watchmen, by Alan Moore
+ 16. I, Robot, by Isaac Asimov
+ 17. Stranger In A Strange Land, by Robert Heinlein
18. The Kingkiller Chronicles, by Patrick Rothfuss
+ 19. Slaughterhouse-Five, by Kurt Vonnegut
20. Frankenstein, by Mary Shelley
+ 21. Do Androids Dream Of Electric Sheep?, by Philip K. Dick
22. The Handmaid's Tale, by Margaret Atwood
23. The Dark Tower Series, by Stephen King
+ 24. 2001: A Space Odyssey, by Arthur C. Clarke
+ 25. The Stand, by Stephen King
+ 26. Snow Crash, by Neal Stephenson
+ 27. The Martian Chronicles, by Ray Bradbury
+ 28. Cat's Cradle, by Kurt Vonnegut
29. The Sandman Series, by Neil Gaiman
30. A Clockwork Orange, by Anthony Burgess
+ 31. Starship Troopers, by Robert Heinlein
32. Watership Down, by Richard Adams
+ 33. Dragonflight, by Anne McCaffrey
+ 34. The Moon Is A Harsh Mistress, by Robert Heinlein
35. A Canticle For Leibowitz, by Walter M. Miller
36. The Time Machine, by H.G. Wells
+ 37. 20,000 Leagues Under The Sea, by Jules Verne
+ 38. Flowers For Algernon, by Daniel Keys
+ 39. The War Of The Worlds, by H.G. Wells
40. The Chronicles Of Amber, by Roger Zelazny
41. The Belgariad, by David Eddings
42. The Mists Of Avalon, by Marion Zimmer Bradley
43. The Mistborn Series, by Brandon Sanderson
+ 44. Ringworld, by Larry Niven
+ 45. The Left Hand Of Darkness, by Ursula K. LeGuin
+ 46. The Silmarillion, by J.R.R. Tolkien
+ 47. The Once And Future King, by T.H. White
48. Neverwhere, by Neil Gaiman
+ 49. Childhood's End, by Arthur C. Clarke
+ 50. Contact, by Carl Sagan
51. The Hyperion Cantos, by Dan Simmons
52. Stardust, by Neil Gaiman
+ 53. Cryptonomicon, by Neal Stephenson
54. World War Z, by Max Brooks
55. The Last Unicorn, by Peter S. Beagle
+ 56. The Forever War, by Joe Haldeman
57. Small Gods, by Terry Pratchett
+ 58. The Chronicles Of Thomas Covenant, The Unbeliever, by Stephen R. Donaldson
59. The Vorkosigan Saga, by Lois McMaster Bujold
60. Going Postal, by Terry Pratchett
+ 61. The Mote In God's Eye, by Larry Niven & Jerry Pournelle
62. The Sword Of Truth, by Terry Goodkind
63. The Road, by Cormac McCarthy
64. Jonathan Strange & Mr Norrell, by Susanna Clarke
65. I Am Legend, by Richard Matheson
66. The Riftwar Saga, by Raymond E. Feist
+ 67. The Shannara Trilogy, by Terry Brooks
68. The Conan The Barbarian Series, by R.E. Howard
69. The Farseer Trilogy, by Robin Hobb
70. The Time Traveler's Wife, by Audrey Niffenegger
71. The Way Of Kings, by Brandon Sanderson
72. A Journey To The Center Of The Earth, by Jules Verne
73. The Legend Of Drizzt Series, by R.A. Salvatore
74. Old Man's War, by John Scalzi
+ 75. The Diamond Age, by Neil Stephenson
+ 76. Rendezvous With Rama, by Arthur C. Clarke
77. The Kushiel's Legacy Series, by Jacqueline Carey
+ 78. The Dispossessed, by Ursula K. LeGuin
+ 79. Something Wicked This Way Comes, by Ray Bradbury
80. Wicked, by Gregory Maguire
81. The Malazan Book Of The Fallen Series, by Steven Erikson
82. The Eyre Affair, by Jasper Fforde
83. The Culture Series, by Iain M. Banks
+ 84. The Crystal Cave, by Mary Stewart
85. Anathem, by Neal Stephenson
86. The Codex Alera Series, by Jim Butcher
87. The Book Of The New Sun, by Gene Wolfe
88. The Thrawn Trilogy, by Timothy Zahn
89. The Outlander Series, by Diana Gabaldan
90. The Elric Saga, by Michael Moorcock
+ 91. The Illustrated Man, by Ray Bradbury
92. Sunshine, by Robin McKinley
93. A Fire Upon The Deep, by Vernor Vinge
+ 94. The Caves Of Steel, by Isaac Asimov
95. The Mars Trilogy, by Kim Stanley Robinson
+ 96. Lucifer's Hammer, by Larry Niven & Jerry Pournelle
97. Doomsday Book, by Connie Willis
98. Perdido Street Station, by China Mieville
99. The Xanth Series, by Piers Anthony
100. The Space Trilogy, by C.S. Lewis