A Wrinkle in Time by Madeleine L'EngleNumber the Stars by Lois LowryHoles by Louis SacharThe Golden Compass by Philip PullmanThe Little Prince by Antoine de Saint-Exupéry
Best Young Adult Books
13,161 books — 80,235 voters
Slaughterhouse-Five by Kurt Vonnegut Jr.Dirk Gently's Holistic Detective Agency by Douglas AdamsTimequake by Kurt Vonnegut Jr.The Time Traveler's Wife by Audrey NiffeneggerA Wrinkle in Time by Madeleine L'Engle
Best Time Travel Fiction
2,018 books — 5,321 voters

The Hitchhiker’s Guide to the Galaxy by Douglas AdamsEnder’s Game by Orson Scott CardThe Martian Chronicles by Ray BradburyA Wrinkle in Time by Madeleine L'EngleThe Diamond Age by Neal Stephenson
Best Science Fiction
3,734 books — 7,196 voters
A Wrinkle in Time by Madeleine L'EngleFahrenheit 451 by Ray BradburyBrave New World by Aldous HuxleyThe Martian Chronicles by Ray Bradbury
Best Science Fiction & Fantasy Books
8,544 books — 24,962 voters

House of Leaves by Mark Z. Danielewski
Best Books of the Decade: 2000s
7,187 books — 28,370 voters