I didn't expect much from this show (the trailer kind of reminded me of a typical Lifetime movie) but I started watching it the other day when I was bored, and a few episodes in I was totally hooked. I binge-watched the whole season in less than a week.
It's not just focused on some poor little yuppie blonde girl in prison; it really delves into the other women and their backstories too. I really liked the flashbacks into the other characters backgrounds and their lives before prison; the women aren't just portrayed as criminals/thugs/antagonists--they all have a human side, and I was impressed with the character development and depth so far.
It's totally different, but that was one of the things I loved about Lost; the character development really makes the show.
Anyway, I went through this season way too fast... I'm sad it's over already and I can't wait for season two!