Hugo Awards Recommendations: Which shorts / novelettes / novellas have I missed?

It’s almost that time again:  time to nominate stuff for the Hugos. I usually miss a lot of stuff throughout the year, so I like to reach out to readers to see what they’d recommend so I can create a reading list for myself.  Last time, you folks recommended so much that I ended up with a 1,200-page ebook!  I want to give myself a little more time for the next nominating season.

So…which short stories, novelettes, and novellas should I be reading?  Let me know in the comments below!