The Hitchhiker’s Guide to the Galaxy by Douglas Adams
Best Books of the Decade: 1970s
1,955 books — 1,880 voters
Watchmen by Alan             MooreThe Restaurant at the End of the Universe by Douglas AdamsThe Silence of the Lambs by Thomas  HarrisLife, the Universe and Everything by Douglas AdamsSo Long, and Thanks for All the Fish by Douglas Adams
Best Books of the Decade: 1980s
2,258 books — 2,433 voters

Harry Potter and the Sorcerer's Stone by J.K. RowlingHarry Potter and the Chamber of Secrets by J.K. RowlingHarry Potter and the Prisoner of Azkaban by J.K. RowlingFight Club by Chuck Palahniuk
Best Books of the Decade: 1990s
3,129 books — 3,678 voters
Harry Potter and the Deathly Hallows by J.K. RowlingHarry Potter and the Half-Blood Prince by J.K. RowlingHarry Potter and the Goblet of Fire by J.K. RowlingHarry Potter and the Order of the Phoenix by J.K. Rowling
Best Books of the Decade: 2000s
7,186 books — 28,369 voters

The Red and the Black by StendhalThe Hunchback of Notre-Dame by Victor HugoTaras Bulba by Nikolai GogolFaust, Part Two by Johann Wolfgang von GoetheGobseck by Honoré de Balzac
Best Books of the Decade: 1830s
244 books — 236 voters
Горе от ума by Alexander Griboyedov
Best Books of the Decade: 1820s
200 books — 150 voters

The Complete Grimm's Fairy Tales by Jacob Grimm
Best Books of the Decade: 1810s
141 books — 324 voters
Faust, First Part by Johann Wolfgang von Goethe
Best Books of the Decade: 1800s.
103 books — 94 voters

Fahrenheit 451 by Ray Bradbury
Best Books Ever
76,702 books — 285,058 voters