Dam. Lavender and Peaches already grabbed many of my faves. So I'll throw in a few others. If I repeat anything, forgive me. I'm about to get banned, anyway.
The Ox-Bow Incident, Walter Van Tilburg Clark
Mildred Pierce, James M. Cain
Eden, Stanislaw Lem
Fiasco, Stanislaw Lem
Slaughterhouse-Five, Kurt Vonnegut
God Bless You, Mr. Rosewater, Kurt Vonnegut
Mother Night, Kurt Vonnegut
Galapagos, Kurt Vonnegut
The Inheritors, William Golding
For Whom the Bell Tolls, Ernest Hemingway
Cannery Row, John Steinbeck
Ethan Frome, Edith Wharton
The Heart is a Lonely Hunter, Carson McCullers
The Water-Method Man, John Irving
Kaputt, Curzio Malaparte
Journey to the End of the Night, Louis-Ferdinand Celine
The Count of Monte Cristo, Alexandre Dumas (this is probably No. 1)
The Man Who Laughs, Victor Hugo
Huck Finn, that Twain fella
The Time Machine, H. G. Wells
Fahrenheit-451, Ray Bradbury
Childhood's End, Arthur C. Clarke
The City and the Stars, Arthur C. Clarke
The Green Ripper, John D. MacDonald (or about ten other Travis McGee novels)
The Dark Wind, Tony Hillerman
The Yearling, Marjorie Kinnan Rawlings
The Good Soldier Svejk, Jaroslav Hasek
Lord Jim, Joseph Conrad
Victory, Joseph Conrad
Native Son, Richard Wright
Howards End, E. M. Forster
The Name of the Rose, Umberto Eco
The Hound of the Baskervilles, Arthur Conan Doyle
She, H. Rider Haggard
Ecletic enough?
caw