Reading Essentials (Short Stories)

This is a list of short stories that I believe are essential reading. Only stories that I have read will be included.  As such, this is not meant to be a "definitive" list in any way; it will undergo revision and expansion as I read more stories and reconsider those I have already read. All entries on this list meet one or more of the following criteria: 

1. I believe they are culturally significant in some way. 
2. I believe they contribute something to literature as a medium. 
3. I believe they offer a unique or unorthodox reading experience. 
4. I admire or respect their craft. 
5. I believe they are exceptional pieces of entertainment. 

List is ordered alphabetically by author's last name.