Better get my opinion down before it's affected by all the other opinions I read...
I was irritated with the previews for the show, because they gave away a major plot point (that the baby doesn't stay baby for long). It would've been much better if that had remained a surprise. A -1 starfish for the previews.
As for the show itself, it seemed like a standard comic book story. Mysterious baby grows old and dies in a day (kind of eerily links to the Smallville episode this week that way). I liked the movement of the general plotline: how Oracle is now aware of Harley and Harley is definitely aware of Huntress. Otherwise, this story is a miss. 2 starfish.