I never finished House Corrino or anything after that from Brian Herbert. Something about his writing style just sort of got to me. Come to think of it, I couldn't get past god Emperor... and what's the deal with Duncan Idaho... I mean, REALLY...
I have to get back on the Dark Tower. I have Song of Susannah, but haven't started it yet.
Anyway, I don't really have anything to loan out, but I'll list some stories I've rather liked:
Michael Swanwick - Vacuum Flowers
Michael Swanwick - Stations of the Tide
Michael Swanwick - The Iron Dragon's Daughter
Notes: I like the approach this author takes where technology and such isn't really described in detail, it just is and is taken for granted. It is not the focus of the story, but plays it's part. It is up to the readers imagination to fill in the details.
Dan Simmons - Hyperion
Dan Simmons - The Fall of Hyperion
Dan Simmons - Endymion
Dan Simmons - The Rise of Endymion
Notes: Been a while since I read this series, but it was engaging and different.
Neal Asher - Gridlinked
Neal Asher - The Skinner
Neal Asher - Shadow of the Scorpion
Notes: These are just fun... quite a universe that's created here, and there like 10-12 books set in this universe even if they're not all series.
Stephen Baxter - Raft
Stephen Baxter - Flux
Notes: More stuff set in this universe, definitely hard sci-fi
Neal Stephenson - The Diamond Age (and Snow Crash, but everyone's read that, right?)
Dave Wolverton - On My Way to Paradise
Piers Anthony - Macroscope
These just popped into my head really quick, I'm leaving lots of stuff out, but these could keep a person busy for a while.