A few favourites:

The Road - Cormac McCarthy
1984 - George Orwell
Matilda - Roald Dahl
Kurt Vonnegut - Slaughterhouse 5
Cosmos - Carl Sagan
All Quiet on the Western Front - Erich Maria Remarque
The Wind up Bird Chronicle - Haruki Murakami
Post Office - Charles Bukowski
The Lord of the Rings - Tolkien