Here's a start....
The Bible
To put it succinctly, no other book has had such a profound effect on the way I live and behave. Not that I am a perfect Christian (no such thing), but I frame everything I do for better or worse within the concepts and teachings of this book.
The Hobbit & The Lord Of The Rings – JRR Tolkien
Outside of Bible stories, this was the first truly epic adventure story I ever heard. It seems exposure as a child goes along way towards framing people's opinions of this story, but for me it will remain one of the greatest fictional tales ever told.
All The Pretty Horses – Cormac McCarthy
The landscape, characters, dialogue, prose. McCarthy is masterful.
The Heart of The Matter – Graham Greene
A richly and beautifully told morality play. One of the first stories I read cast in a British Colonial landscape. These settings have been a draw for me ever since.
Independence Day – Richard Ford
Ford's Bascombe trilogy, is, in my opinion the greatest work by any living American author that I have read. I have never read of a more richly drawn and complex character than Frank Bascombe.
James Lee Burke – Four way toss-up between Heavens Prisoners, Burning Angel, Dixie City Jam, and Crusaders Cross.
Burke is simply the best there is in this genre. And he writes some of the best prose from any genre.
The Piano Tuner – Daniel Mason
In 1886 a humble London piano tuner accepts a commission from the department of war to travel through British India to Burma to repair a rare piano owned by a mysterious surgeon-major who is somehow using the piano to further the expansion of the British Empire. Absolutely mesmerizing prose that paints all the beautiful little scenes and interactions with magic and mystery.
Pet Cemetary – Stephen King
Transcendent because it scared the &%*# out of me when I was thirteen.
Man Child In The Promised Land – Claude Brown
The grittiest, most realistic, and most honest piece of writing I've ever read about growing up black in the Ghetto. Sad, exciting, funny, provocative, hopeful. I think it would be difficult for anyone to read it and not be changed.
Billy Lynns Long Halftime Walk – Ben Fountain
Stayed with me for a looong time after I finished it. The stream of consciousness of young Iraq war combat vet Billy Flynn is hilarious, profound, indicting, forgiving, terrified, and brave all at once.
The Things They Carried – Tim O'Brien
Wrenching, beautifully told stories from the Vietnam war. Everyone should read it.