Science fiction author Harlan Ellison died in his sleep. In addition to his own individual creative works, he had his hands in many science fiction endeavors, from the original Star Trek to Babylon 5.

A quote of his regarding Superman:
Quote
If one of the unarguable criteria for literary greatness is recognition, consider this: In all of the history of literature, there are only five fictional creations known to every man, woman, and child on the planet. The urchin in Irkutsk may never have heard of Hamlet, the peon in Pernambuco may not know who Raskolnikov is; the widow in Jakarta may stare blankly at the mention of Don Quixote or Micawber or Jay Gatsby. But every man, woman, and child on the planet knows Mickey Mouse, Sherlock Holmes, Tarzan, Robin Hood... and Superman. He is more than the fanciful daydream of two Cleveland schoolboys. He is the 20th-century archetype of mankind at its finest. He is courage and humanity, steadfastness and decency, responsibility and ethic. He is our universal longing for perfection, for wisdom and power used in the service of the human race. Of all the literary creations of American fiction, Superman, after all these years, born of a 'dispensable, disreputable' genre, is the only one that seems certain to get Posterity's nod. And that is because, simply put, he is our highest aspirations in human form.

RIP, Mr. Ellison.

- Lynn