I stuck with "Dominion" for all of Season 1. The concept was what kept me in the beginning, but the show hit stride about midway through. It was only 8 episodes, but if they get a second season, I think it's going to be really good.
They really tied up some stupid plot lines and bad characters early and then focused on the handful of really interesting story lines and dove into them. It was really good. The last three episodes were great.