The Hitchhiker's Guide to the Galaxy
Douglas Adams
Ubik
Philip K. Dick
The system of the world
Neal Stephenson
The Dark Tower
Stephen King
Dirk Gently's Holistic Detective Agency
Timeline
Michael Crichton
The time traveler's wife
Audrey Niffenegger
Night Watch
Terry Pratchett
Flashforward
Robert J. Sawyer
Slaughterhouse-five: or, The children's crusade, a duty-dance ...
Kurt Vonnegut