Many reviewers I believe are entirely missing the point of this documentary series, people complain about the lack of complexity and detail. It is very clear that Brian has an immense passion for what he is talking about and wishes to share that passion, to show those who had no prior interest in science what it is all about.
If you are looking for an array of fun little facts about the solar system then this isn't for you, I can recommend "The Universe" documentary series for that. If you are already a fan of science and enjoy watching other similar documentaries then chances are you won't learn a great deal, but again that isn't the point.
Brian is trying to show that there is more to science than learning facts and is attempting to illustrate the wonderous side of science. Many it seems are utterly unable to handle anything that isn't loaded with CGI and facts. But for those who can enjoy a humble and passionate series presented by a humble and passionate presenter, I would recommend this series to.
Granted Brian Cox is no Carl Sagan and this series is no 'Cosmos' it can definitely do what it sets out to do which is to inspire those capable of holding a child-like sense of wonder and a passion for deeper thinking.
This series will encourage the curious minds to think deeper about things and won't attempt to overload you by repeatedly shouting interesting space facts at you.