I'll start...
Kurt Vonnegut
Frank Herbert

i mainly stick with nonfiction.

Bill Bryson is probably my favorite right now.

Hunter S. Thompson and J.K. Rowling are tied for #2.

And David Sedaris too!

J.R.R. Tolkien
C.S. Lewis
Zora Neale Hurston
Mark Twain
Sigmund Brouwer
Agatha Christie
John Steinbeck
Jon Krakauer
Tennessee Williams
Arthur Miller
Oscar Wilde

James Lee Burke
John Sanford
Jonathan Kellerman
Michael Connelly
Robert Crais
Martha Grimes
Ruth Rendell
Lee Child
Sue Grafton
Stephen White
Reginald Hill

Robert Heinlein
J.R.R. Tolkien
Mary Stewart
Beatrice Small
Marion Zimmer Bradley

Larry McMurtry

David W. Barber. Hands down. If he writes it, I'm buying.

Ayn Rand
Tom Clancy
Mark Twain
I'd say Leo Tolstoy, but while I like War in Peace, that's pretty much all I like -- but I really, really liked War & Peace.

Ken Follett
Maeve Binchy
Stephen King

I have so many ... this makes me realize how little time I spend reading anymore.. I used to be such a voracious reader but with the internet, I've found that I just don't take the time to pick up an actual book.

Anyone have a Kindle? I thought that might be a good idea.

My top 5 (plus a bonus: favorite poet) in order:

Neal Gaiman
Neil Stephenson
Phillip K. Dick
Isaac Asimov
William Gibson

Lord Byron (Poetry)

George Orwell
Aldus Huxley
Ed Poe
Agatha Christie
Art Doyle
Sam Clemmons