Among the ones I've read, my favorite is "Two Yards of Dragon".
- Arthur Clarke's "A Walk in the Dark"; download text/audio; horror: Our primeval fears...
- L Sprague de Camp's "Nothing in the Rules; download; humor: What if mermaids were allowed in women's swimming competitions?
- L Sprage de Camp's "Two Yards of Dragon" (A); download: Adventures dragon hunting...
- Fritz Leiber's "The Bleak Shore"; download.
- Murray Leinster's "Nightmare Planet"; download: I don't recollect this title but it appears to be yet another variant of "The Mad Planet".
- Frederik Pohl's "The Kindly Isle"; download.
- Manly Wade Wellman's "O Ugly Bird!"; download.
- Alice Sheldon's "The Man Who Walked Home" (as by James Tiptree, Jr); download.
- John Varley's "Air Raid"; download.