Does anyone know any good science fiction-ish books?

Farenheit 451 by Ray Bradbury is great! The Chronicles of Thomas Covenant by Stephan Donaldson I love it!, Foundation Triology by Isaac Asimov is wonderful! The Dune Series by Frank Herbert is great! Piercing the Darkness and This Present Darkness by Frank Peretti is marvelous! House and Thr3ee by Ted Dekker is good too!