A solid, interesting collection. While there were no stories here that totally blew me away, there were no complete duds, either. All of the stories were well-written and at least somewhat interesting, many were thoroughly enjoyable, and there were a few that weren't as enjoyable but were particularly memorable and thought-provoking. My favorites I've marked below with an asterisk.
A few quick words about each story, keyed to the author's last name:
Lee: inventive sci-fi story that felt more like fantasy
Parker: I liked the magic system and investigative approach, but gender dynamic was uncomfortable
El-Mohtar: rather unique dark fantasy about a rather unique green book
Kim: strong "literary" fiction with a significant speculative element
Landis: loved the descriptions of the setting...good plot and characters, too
Yant: interesting fairy-tale story with a metafictional element
Tem: I was glad for an interstellar story, but ultimately not that memorable
Johnson: that's different: a High Fantasy about regular people living regular lives
Yu: an excellent "what if" story, with interesting social commentary
Swirsky: didn't care for the character, but what a sweeping, inventive story...
Castro: I didn't like this one as a story, but it definitely got me thinking
Kte'pi: a superhero tale with good characterization, but overall this wasn't very memorable
Henderson: nice blend of fantasy and sci-fi tropes, well-done moral ambiguity
Park: the most memorable and thought-provoking of the collection, although flawed as a story
Wolfe: this one didn't really resonate
*Emshwiller: great voice, interesting setup, thought-provoking
*Cooney: creepy and engrossing!
Gaiman: kept me guessing...enjoyable read
Fagan: certainly original and unique, but the plot I found a little lacking
Watts: got a little monotonous/repetitive, but overall a strong sci-fi/horror tale
Berger: strong characterization and setting, wished it had a better plot
Duncan: enjoyable, bittersweet romantic fantasy
Reed: I liked the mystery and sci-fi elements, but too much running for my taste
*Anders: intriguing, comical first contact story
Surridge: amazingly creative, with a style reminiscent (or derivative) of Lord Dunsany**
Broderick: well-executed unreliable narrator, great concept, not sure about some of the dialog
*Omowoyela: probably my favorite of the bunch, loved the plot, compelling characters
*Hand: another winner--vivid setting details, awesome flying machine, cool SF element
**if you're a fantasy fan, and don't know who Lord Dunsany is, you owe it to yourself to find out!