Since I’m downstairs now (right by the bookcase), and it’s no longer 3 am, I can provide a list of stuff I’ve already read so you’ll have a jumping off point.
I’ve own and have read:
Pyramids, by Pratchett (funny, obviously)
The Mote in God’s Eye by Niven and Pournelle (good)
Hugo Winners V. I, II, and III, edited by Asimov
Robots of Dawn, by Asimov
Mindbridge by Haldeman
The Elric Saga p. I and II, by Moorcock (really good, but fantasy)
The Complete Robot, by Asimov
Rama II, by Clarke and Lee
Starchild Trilogy by Pohl and Williamson
Sentinel by Clarke
2001, 2010, 2061, and 3001 by Clarke (favorite series so far)
Missing Man by MacLean (blah)
The Martian Chronicals by Bradbury
Galactic Empires v. I and II, edited by Aldiss (includes Lord of A Thousand Sons, by Anderson, Big Ancestor, by Wallace, and Star Plunderer, by Anderson)
Across the Sea of Suns by Beneford
The Ophiuchi Hotline by Varley
Eon by Bear
Orn by Anthony
Year’s Best Sci-Fi, sixth collection, edited by Dozois (not exactly Sci-Fi, I was kind of puzzled by this)
The Complete Book of Swords by Saberhagen (EXCELLENT!)
The Lost Swords, The First Triad by Saberhagen (also excellent. I wish I had the second and third triads)
and every single Conan book written.
I have but have not read:
Dune, by Herbert
Dune Messiah, Herbert
God Emperor of Dune, Herbert
Children of Dune, Herbert
Dune Encyclopedia, by McNelly
Dragonriders of Pern, by McCaffrey
DragonsDawn, by McCaffrey
The Harper Hall of Pern, by McCaffrey
Moreta: DragonLady of Pern by McCaffrey
Earthclan, by Brin
Three Hainish Novels by Le Guin
Four Lords of the Diamond by Chalker
The Ozark Trilogy by Elgin
I tried to read Dune, but ugh. I just couldn’t push my way through it. Loved the game, though. 
–Tim