The Pillars of the Earth by Ken FollettThe Name of the Rose by Umberto Eco
Best Middle Ages Books
1,305 books — 1,781 voters

The Great Dune Trilogy by Frank Patrick HerbertThe Foundation Trilogy by Isaac AsimovThe Ender Quartet Box Set by Orson Scott CardRingworld by Larry NivenGateway by Frederik Pohl
Best Science Fiction Series
446 books — 1,141 voters
Dune by Frank Patrick HerbertEnder’s Game by Orson Scott Card
Best Science Fiction
3,841 books — 7,755 voters

The Hitchhiker’s Guide to the Galaxy by Douglas AdamsThe Restaurant at the End of the Universe by Douglas AdamsLife, the Universe and Everything by Douglas AdamsMostly Harmless by Douglas AdamsSnow Crash by Neal Stephenson
Best Comedic Science Ficttion Books
625 books — 1,199 voters
A Game of Thrones by George R.R. MartinAssassin's Apprentice by Robin HobbThe Color of Magic by Terry PratchettDragonlance Chronicles by Margaret WeisChronicles of the Black Company by Glen Cook
Best Fantasy Series, Trilogies, and Duologies
2,192 books — 12,264 voters