Rick Green
Enrico Gruen (27 eps)
Dave Gibbons
Self (7 eps)
Spider Robinson
Self (6 eps)
Harlan Ellison
Self (6 eps)
Neil Gaiman
Self (5 eps)
Douglas Adams
Self (5 eps)
Ben Bova
Self (5 eps)
Robert J. Sawyer
Self (4 eps)
Michael Moorcock
Self (4 eps)
Will Eisner
Self (4 eps)
David Brin
Self (4 eps)
Jerry Pournelle
Self (4 eps)
Samuel R. Delany
Self (4 eps)
Clive Barker
Self (4 eps)
Joe Haldeman
Self (4 eps)
Peter David
Self (4 eps)
Bruce Sterling
Self (4 eps)
Terry Pratchett
Self (3 eps)
Sean Stewart
Self (3 eps)
Gregory Benford
Self (3 eps)
Kevin Eastman
Self (3 eps)
William Gibson
Self (3 eps)
Len Wein
Self (3 eps)
Iain Banks
Self (3 eps)
Frederik Pohl
Self (3 eps)
Robert Silverberg
Self (3 eps)
P. D. James
Self (2 eps)
Ray Bradbury
Self (2 eps)
Alan Moore
Self (2 eps)
Hal Clement
Self (2 eps)
Sharyn McCrumb
Self (2 eps)
John Brunner
Self (2 eps)
Andre Norton
Self (2 eps)
Julius Schwartz
Self (2 eps)
Mike Resnick
Self (2 eps)
Brian Stableford
Self (2 eps)
Nancy Kress
Self (2 eps)
Charles de Lint
Self (2 eps)
Walt Simonson
Self (2 eps)
Larry Niven
Self (2 eps)
Lois McMaster Bujold
Self (2 eps)
Kim Stanley Robinson
Self (2 eps)
Timothy Leary
Self (1 eps)
Walter Jon Williams
Self (1 eps)
Donald E. Westlake
Self (1 eps)
L. Sprague de Camp
Self (1 eps)
Roberta Williams
Self (1 eps)
Ellen Datlow
Self (1 eps)
Élisabeth Vonarburg
Self (1 eps)
Doris Lessing
Self (1 eps)
Anne Rice
Self (1 eps)
Dave Sim
Self (1 eps)
Michael Dorn
Self (1 eps)
C. J. Cherryh
Self (1 eps)
Lewis Shiner
Self (1 eps)
Bob Shaw
Self (1 eps)
Salman Rushdie
Self (1 eps)
Paul Di Filippo
Self (1 eps)
Dan Curtis
Self (1 eps)
Walter Koenig
Self (1 eps)
Kate Wilhelm
Self (1 eps)
Frank Kelly Freas
Self (1 eps)
Monica Hughes
Self (1 eps)
Martin H. Greenberg
Self (1 eps)
Forrest J. Ackerman
Self (1 eps)
Garth Ennis
Self (1 eps)
Jane Yolen
Self (1 eps)
George R. R. Martin
Self (1 eps)
William F. Wu
Self (1 eps)
Guy Gavriel Kay
Self (1 eps)
Fabian Nicieza
Self (1 eps)
George Zebrowski
Self (1 eps)
Jeanne Kalogridis
Self (1 eps)