There are no Incredible books, only incredible readers.
I'm mostly a short story reader, but:
Here's my top 10 list(s):
The Grapes of Wrath John Steinbeck
Dhalgren - Samuel R. Delany
Foundation Trilogy - Issac Asimov
Dune - Frank Herbert
Breathing Lessons - Anne Tyler
Lord of the Rings - J R R Tolkien
City - Clifford D. Simak
Stranger in a Strange Land - Robert A. Heinlein
Prince of Tides - Pat Conroy
A Prayer for Owen Meany - John Irving
The Road - Cormac McCarthy
Top 10 SF:
In no particular order after the first two.
Dhalgren - Samuel R. Delany
Foundation Trilogy - Issac Asimov
Dune - Frank Herbert
City - Clifford D. Simak
Stranger in a Strange Land - Robert A. Heinlein
The Road - Cormac McCarthy
Ringworld - Larry Niven
The Martian Chronicles - Ray Bradbury
Left Hand of Darkness - Ursula K. LeGuin
The Handmaids Tale - Margaret Atwood
in general any John Irving, E.L. Doctorow, Steinbeck, Cormac McCarthy.
There's are new Anne Tyler and John Irving novels just released I'm looking forward to reading.
If you enjoy short stories, I always enjoy the annual anthologies: Years Best SF, the Best American Short Stories, and the Pen/O Henry Prize Anthology. (all available as ebooks)
Oh and keep your high-five, send money, I'm a struggling writer.