I've been asked, a few times, to produce lists of my favorite short science fiction stories. I did that once (at least) on rec.arts.sf.written, and I did it for the Locus All Centuries poll. And my answer will probably change the next time I think about it seriously. But, just for documentation's sake, I wanted to record my answers from before.
First, here's an off the top of my head answer I gave on rec.arts.sf.written (gosh how I miss that community in its Golden Age!) in December 1999. The original question was "Ten Best Novelettes" (by which the poster (Jerry Friedman) meant "long stories" -- roughly speaking, novelettes and novellas.) Naturally I added short stories too.
Here's what I posted.
Here's my list, which extends to 12 authors and 14 stories (so sue