Michael's Top 10 SF/Fantasy Series   Adam's Top 10 SF Favourites
The Dragonriders of Pern, by Anne McCaffrey The General, Book 1, by David Drake & S.M. Stirling
The Deed of Paksenarrion, by Elizabeth Moon On Basilisk Station, by David Weber
Kushiel, by Jacqueline Carey Ringworld, by Larry Niven
Dune, by Frank Herbert Dune, by Frank Herbert
Lord of the Rings, by J.R.R. Tolkien Sundiver, by David Brin
Saga of the Pliocene Exile, by Julian May War of the Worlds, by H.G. Wells
The Horseclans , by Robert Adams Guns of the South, by Harry Turtledove
Tales of the King's Blades, by David Duncan The Sparrow, by Mary Doria Russell
The Book of Words, by J.V. Jones Ender's Game, by Orson Scott Card
The Stainless Steel Rat, by Harry Harrison Chung Kuo , by David Wingrove
       
  Top 10 Hard SF Books by Women   Top 10 SF Humor Books
In the Garden of Iden, by Kage Baker (first in series) Dirk Gently's Holistic Detective Agency, by Douglas Adams
Cordelia's Honor, by Lois McMaster Bujold (first in series) Phule's Company, by Robert Asprin (first in series)
Foreigner, by C.J. Cherryh (first in series) Jennifer Government, by Max Barry
Becoming Human, by Valerie Freireich Down and Out in the Magic Kingdom, by Cory Doctrow
In Conquest Born, by C.S. Friedman The Eyre Affair, by Jasper Fforde (first in series)
Ammonite, by Nicola Griffith Illegal Aliens, by Phil Foglio and Nick Pollotta
The Sparrow, by Mary Doria Russell Adventures in Time and Space with Max Merriwell, by Pat Murphy
The Healer'sWar, by Elizabeth Ann Scarborough Good Omens, by Terry Pratchett and Neil Gaiman
Doomsday Book, by Connie Willis National Lampoon's Doon, by Ellis Weiner
Kingdom of Cages, by Sarah Zettel To Say Nothing of the Dog, by Connie Willis
       
  Indecisive Pat's Top 20  
Something Wicked This Way Comes, by Ray Bradbury The Left Hand of Darkness, by Ursula K. LeGuin
The Man in the High Castle, by Philip K. Dick The Moon is a Harsh Mistress, by Robert Heinlein
Satan's World, by Poul Anderson The Caves of Steel, by Isaac Asimov
On Stranger Tides, by Tim Powers Red Mars , by Kim Stanley Robinson
Fatherland, by Robert Harris Tales of The Dying Earth, by Jack Vance
Double Star , by Robert Heinlein The Big Time, by Fritz Leiber
A Case of Conscience, by James Blish The Book of Skulls, by Robert Silverberg
The Demolished Man, by Alfred Bester Nightwings, by Robert Silverberg
A Canticle for Leibowitz, by Walter M. Miller The Knight, by Gene Wolfe
Dune, by Frank Herbert Nova , by Samuel R. Delany