Scifi Authors:

Peter F Hamilton. 
Michael Stackpole. 
Aaron Allston. 
Iain M Banks. 
E.E.Doc Smith. 
Dan Abnett
*and numerous others*

Fantasy Authors

Raymond E Feist
David Eddings
David Gemmell
Anne McCaffery
Janny Wurts
Brent Weeks
George R.R. Martin
etc etc