Robots and empire
Isaac Asimov
Fahrenheit 451
Ray Bradbury
Old Man's War Series: (Old Man's War, the Ghost Brigades, the ...
John Scalzi
The Union Club Mysteries
Lucifer's Hammer
Larry Niven & Jerry Pournelle
Mists of Avalon
Marion Zimmer Bradley
Avalon (1)
Lucky Starr and the Big Sun of Mercury
Lucky Starr (4)
The Scions of Shannara
Terry Brooks
Shannara (5)
Pawn of Prophecy
David Eddings
The Belgariad (1)
Dragon on a Pedestal
Piers Anthony
Xanth (7)