Favorite Science Fiction Short Stories: First Draft

I've been playing around with re-reading favorite science fiction short stories and seeing if there's anything that has managed to elude me over the years. (Or at least I've totally forgotten if I did read it.) It's not always as easy as it seems as if it should be to track down individual short stories--at least legally. But that's a story for another day.

Anyway, my initial list (sorted chronologically) is below. A few rules I set for myself:

• One story per author. Certainly there are many on this list for which I could effortlessly reel off multiple deserving entries.
• I didn't worry about exact definitions. There are stories here that are longer than the science fiction awards definition of a short story.
• I didn't cut a lot of slack for popular older stories that require a lot of historical perspective to appreciate today.
• I also didn't include authors who I like for their novels but don't have any short stories I'm aware of that really wowed me. 
• I tried to pick stories that work well in isolation. For example, while I really like Larry Niven's Known Space stories, I think "Inconstant Moon" is probably his best standalone story.

Who am I missing? Are there any of my picks that you think are really off?

	The Machine Stops	E. M. Forster	1909
	A Martian Odyssey	Stanley G. Weinbaum	1934
	Microcosmic God	Theodore Sturgeon	1941
	The Weapon Shop	A. E. van Vogt	1942
	Mimsy were the Borgoves	Lewis Padgett (pseudonym)	1943
	A Logic Named Joe	Murray Leinster	1946
	The Lottery	Shirley Jackson	1948
	Scanners Live in Vain	Cordwainer Smith	1950
	There Will Come Soft Rains	Ray Bradbury	1950
	Surface Tension	James Blish	1952
	It's a Good Life	Jerome Bixby	1953
	Fondly Fahrenheit	Alfred Bester	1954
	The Star	Arthur C. Clarke	1955
	The Last Question	Isaac Asimov	1956
	All You Zombies	Robert Heinlein	1959
	Flowers for Algernon (short story)	Daniel Keyes	1959
	A Rose for Ecclesiastes	Roger Zelazny	1963
	Repent, Harlequin!' Said the Ticktockman	Harlan Ellison	1965
	Light of Other Days	Bob Shaw	1966
	We Can Remember it for you Wholesale	Philip K. Dick	1966
	Aye, and Gomorrah	Samuel Delany	1967
	Inconstant Moon	Larry Niven	1973
	Ender's Game (short story)	Orson Scott Card	1977
	Sandkings	George R. R. Martin	1979
	The Gernsback Continuum	William Gibson	1981
	True Names	Vernor Vinge	1981
	Buffalo Gals, Won't You Come Out Tonight	Ursula Le Guin	1987
	Bears Discover Fire	Terry Bisson	1990
	Even the Queen	Connie Willis	1992
	Story of your Life	Ted Chiang	1998