Meh, I enjoyed the first episode fine. It wasn't amazing, but the cinematography felt more like watching a movie than a TV series on Fox. Some great shots and a very gritty, comic book feel to it.
Agree that introducing Ivy and Riddler so early seems a bit silly, although I like the casting for Nygma. Penguin getting a mini arc was pleasant as well, but it would have been stronger had we not also bumped heads with a few other future villains as well.
Really like Donal Logue as Bullock, and I thoughr Jada Pinkett-Smith was a lot of fun as Fish Mooney. As far as I can see, she's been made up for the show.
That last point is good, because we can't exactly have Gordon defeating the likes of The Penguin, The Riddler, Poison Ivy etc before Batman even comes onto the scene. It's been said elsewhere, but the show's premise puts itself in a bit of a hole:
Either Gordon fights this villains and defeats them, rendering Batman's existence pointless.
These villains don't emerge until Batman arrives, making it seem like Batman is the catalyst for their creation.
I daresay Gordon's feuds will be with minor villains like Fish Mooney and co, rather than supervillains. It's a shame, though, as I reckon most fans are more excited to see their favourite villains than they are to see Batman or Jim Gordon.