As per an earlierpost, 2008 is turning out to be a brutal year for the nerd elite. The body count is racking up faster than kobolds on the business end of a +5 Holy Avenger.
Apart from Gary Gygax...
Steve Gerber, creator of Howard the Duck.
Dave Stevens, creator of the Rocketeer.
Jim Mooney, longtime Marvel Comics artist.
Robert Asprin, fantasy writer, creator of the Myth Adventures series.
Bob Bledsaw, game designer, dungeon master, and founder of the Judge's Guild.
Sir Arthur C. Clarke, science fiction writer.
Alexander Courage, composer of the Star Trek theme music.
Joseph Pevney, science fiction director, including several Star Trek episodes such as the Trouble with Tribbles... Tribbles!
Will Elder, EC Comics, Mad Magazine, Playboy Magazine artist.
Michael Turner, creator of Witchblade and Fathom, founder of Top Cow Comics.
The artist who painted the cover for the original D&D Monster Manual and Player's Handbook.
James Cawthorn, Sci-Fi writer and illustrator, best known for Elric of Melnibone paintings.
Thomas Disch, science fiction writer.
Ken Slater, founder of the British Science Fiction Association.
Robin Crossby, game designer, dungeon Master, creator of Harnworld.
Michael Crichton, Best-Selling author.
Forrest J. Ackerman, Science-Fiction luminary.
Majel B. Roddenberry, Keeper of the Trek.

"A fanatic is one who can't change his mind and won't change the subject." Winston Churchill
Zion Akbar!