In no particular order as I look around the office:
Living Fiction Authors:
Terry Pratchett, Neil Gaiman, Kirin Desai, Haruki Murakami, Harper Lee, Steven Brust, Kim Robinson, Raymond Feist, Alan Dean Foster, Melanie Rawn, David Brin, Tom Robbins, Larry Niven, Jerry Pournelle, Steven Barnes, Orson Scott Card, Tom Stoppard, Barbara Hambley, Harry Harrison, Charles de Lint, Philip Pullman, Margaret Weiss, Tracy Hickman, R.A. Salvatore, Frank Chin, Margaret Atwood
Living Non-Fiction Authors:
Jared Diamond, Richard Dawkins, Michael Sherman, Maria Tatar, Chris Chabris & Daniel Simons, Stephen Greenblatt, Howard Gardner, Desmond Morris, Judith Butler
Young Adult Authors I Am Sometimes Reticent To Reveal I Like As I Am 36:
Suzanne Collins, John Flanagan, Jay Asher, Sherman Alexie, Laurie Anderson
Deceased Fiction Authors:
Douglas Adams, Joel Rosenberg (NOT Joel C. Rosenberg), David Eddings, Robert Jordan, Anne McCaffery, Fred Saberhagen, J.R.R. Tolkien, Lloyd Alexander, Alexander Dumas, Victor Hugo, Geoffery Chaucer, William Shakespeare, Kurt Vonnegut, Fyodor Dostoevsky, Fritz Leiber, Franz Kafka, Edgar Allen Poe, H. P. Lovecraft, Anais Nin, H.G. Wells, Arthur Conan Doyle, Mary Shelly, Oscar Wilde, Mark Twain, Pauline Reage, Voltaire, Roger Zelazney, C.S. Lewis, Richard Adams
Deceased Non-Fiction Authors:
Charles Darwin, Christopher Hitchens, Michel Foucault, Ferdinand de Saussure, Simone de Beauvoir, Jaques Derrida
Authors I liked enough to go see speak somewhere and got them to sign a book afterwards:
Douglas Adams, Terry Pratchett, Sherman Alexie, Jared Diamond
Additional Answer: Yes