I really enjoyed it. I'm not sure exactly how closesly it ties into the comics origin story, but as somebody who only knows the basics of Ollie's story I thought it was good. I know enough to get a kick out of the little easter eggs, like Merlyn (I'm assuming he's going to end up the big bad at some point), Speedy (who is hooked on drugs....hmmm, I wonder if they'll do the HIV thing too), and the Deathstroke mask.
So, I'm wondering if John Barrowman's mystery role will be Deathstroke? That just seems like a pretty big thing to drop in and then not give us payoff sometime soon.
Definitely sticking with this for the foreseeable future.