The Forever War by Joe HaldemanA Connecticut Yankee in King Arthur's Court by Mark TwainReplay by Ken GrimwoodThe House on the Strand by Daphne du MaurierThe Time Traveler's Wife by Audrey Niffenegger
Best Time Travel Fiction
2,001 books — 5,285 voters
The Handmaid’s Tale by Margaret AtwoodOn Basilisk Station by David  WeberContact by Carl SaganNever Let Me Go by Kazuo IshiguroThe Diamond Age by Neal Stephenson
Best Science Fiction With a Female Protagonist
1,400 books — 2,828 voters

Dune by Frank Herbert1984 by George OrwellFahrenheit 451 by Ray BradburyFoundation by Isaac AsimovNeuromancer by William Gibson
Best Science Fiction & Fantasy Books
8,533 books — 24,823 voters
1984 by George OrwellA Clockwork Orange by Anthony BurgessDo Androids Dream of Electric Sheep? by Philip K. DickNever Let Me Go by Kazuo IshiguroThe Giver by Lois Lowry
Best Dystopian and Post-Apocalyptic Fiction
3,777 books — 26,039 voters

The Hitchhiker’s Guide to the Galaxy by Douglas AdamsBridget Jones’s Diary by Helen FieldingThree Men in a Boat by Jerome K. JeromeI Am America by Stephen ColbertSlaughterhouse-Five by Kurt Vonnegut Jr.
Best Humorous Books
4,347 books — 7,950 voters