I've watched the entire first season on DVD and I found it very addictive. Some episodes are better than others, there is the inevitable getting to know the characters and if you are familiar with Dr. Who history (especially the most recent series), you'll understand some episodes quite a bit better.
It is definitely a adult targeted show; I wouldn't consider it appropriate for children. (for teenagers, well, depends on the teen concerned). Includes sex and violence. It also has some episodes that I could only classify as horror. Without a doubt, it is darker than Dr. Who. While they always win (in that the world doesn't end), the characters get hurt and don't get all better and happy by the next episode.
I liked it very much and I'd be interested to hear anyone else's opinion.
