I finished writing my 53rd short story of the year earlier today and a few minutes ago I completed and submitted an essay.
The story is a 3,300-word bit of crime fiction. I started writing it January 17, 2007, in response to an anthology's call for submissions. I had written about half the story before the deadline for submissions passed. That was OK, I suppose, because the story seemed about to take a turn that would have made it inappropriate for that anthology. A month or so ago I spotted another anthology's call for submissions, realized that this story, after taking its turn, would fit. So, I finished it and sent a query off to the editor because he only wants queries, not full ms. submissions.
I wrote the essay in response to another anthology's call for submissions. I spotted the call on September 29 and the essay rolled out of me this evening. It's about 650 words and went to the editor a few minutes ago.
i enjoy writing essays, wish I had more opportunity to write them, but I have more trouble locating good essay markets than I have locating short story markets.