I mainly read fantasy and sci-fi but I occasionally branch off. Some that I would say are worth reading:
Sci-fi & Fantasy:
A Song of Ice and Fire- GRRM
Night Angel trilogy & The Black Prism- Brent Weeks
Name of the Wind/Wise Man's Fear- Patrick Rothfuss
Farseer trilogy/Liveship traders/Tawny Man trilogy/Rain Wild Chronicles- Robin Hobb
The First Law series- Joe Abercrombie
Lord of the Rings- Tolkien
Dune- Frank Herbert
The City and the Stars & 2001: A Space odyssey- Arthur C. Clarke
Ubik & Do Androids Dream of Electric Sheep?- Phillip K Dick
Idlewild, Edenborn & Everfree- Nick Sagan
Three Feet of Sky series- Stephen Ayres
Hyperion Cantos- Dan Simmons (I haven't read the last 2 book yet though)
Other (most of these have sci-fi elements):
Farenheit 451- Ray Bradbury
Catch-22- Joseph Heller
Never Let Me Go- Kazuo Ishiguro
1984- George Orwell
Brave New World- Aldous Huxley
Before I Go to Sleep- SJ Watson
The Mongoliad- Various authors
Worth reading but with warning:
The Riftwar Cycle- Raymond E Feist (The first 3 are great but vary in quality after, the series is finished now)
Malazan Book of the Fallen- Steven Erikson (Great stories and ideas but difficult to read at times)
Wheel of Time- Robert Jordan (The books can really drag before anything significant occurs... and they're so long!)
Sword of Truth series- Terry Goodkind (Starts off as classic fantasy but runs out of ideas and descends into rather obvious political symbolism)
Easy Reads:
The Phoenix Conspiracy series- Richard L Sanders (Good if you're in the mood for an easy read and simple space odyssey)
Kyralia series, Age of Five Trilogy- Trudi Canavan (Books are good for an easy fantasy read but not particularly deep)
His Dark Materials- Phillip Pullman
The Hunger Games- Suzanne Collins








