Battlestar Galactica is a rare TV show, its astonishing and mesmerising and to be honest utterly depressing, but don't let that put you off TV's best drama around.
Although the show is set in the future where the human race has been exterminated by the very machines they have created (the cylons) it has a lot of reflections on today's society and economic state from current tragedies of terrorism and economic disasters to both religious and political stances of today's world, which makes the drama even more gripping.
There is not one weak season, all are as great as each other with excellent storylines, gripping characters and explosive action. This is very different to the show you remember as a child, it has made some, actually the whole show has changed, it has no resemblance to the original series except for character names, but the most controversial change was the sex of pilot; StarBuck, no longer a man but a strong woman played by an excellent Katee Sackoff, which actually probably wouldn't have worked if the character was cast as a man.
Every cliff-hanger of each season is just as dramatic as the last, the most notable was the mid-season cliff-hanger for season four, I wont say nothing to spoil it but it is one of the most powerful twists to a show that puts the drama in dramatic. Every episode, at the beginning, has a human counter, counting down the number of survivors as people are lost and sometimes found, adding more to the depressing element of the show; Human mortality.
It's a very powerful show that will have you hooked all the way through its four seasons, one of the best TV dramas ever made actually, and the tin box-set is very cool, well worth the price.