Richard J. Morgan, the Takeshi Kovacs series
Iain M. Banks, the Culture series and others
C.J. Cherryh, Cyteen
Neal Asher, anything he has written
Not sci-fi, but Neal Stephenson, Cryptonomicon and the Baroque Cycle, and Seveneves, which is sci-fi
William Gibson, anything at all he's written
Dan Simmons Hyperion Cantos
Joe Haldeman, The Forever War
Alistair Reynolds has a bunch of good stuff, the titles of which, I can't remember at the moment.
Charles Stross, the only one comes to mind is Accelerando, but there are many
Stephen King, The Dark Tower, and the one about the Kennedy Assasination
Neal Gaiman, more fantasy than sci-fi, but I love his stuff. He is deservedly famous.