I've just finished watching season three of Battlestar Gallactica (BSG) on DVD.
What a fantastic series, and what a great ending to the penultimate season.
BSG is a 'reimagining' of the classic but cheesy late-seventies sci-fi series about a group of human survivors trying to find earth in the face of the genocidal Cylons.
Much of the series tackles contemporary issues such as the use of torture, the tactics of insurgency and the democratic process. It does this by making the humans, with whom the audience tend to identify, into the insurgent terrorists, using tactics such as suicide bombings and torture.
Given that the programme is a US production it is a brave approach.
Along with all the best sci-fi (ie Firefly) the real strength of the series is in the strength of the characters. There is no hero here. All are deeply flawed. But they draw us in all the more for it.
This is a must see series for any sci-fi fan that hasn't caught up with it yet.