I was amazed that i didn't find it here, coz it's one of the best sci-fi series I have ever seen! But I did find Caprica - Wich is a spin off OF BSG - that is is set more than 50 years before the events of Battlestar Galactica, when Admiral Adama was a young boy and his father Joseph Adama was an infamous civil liberties lawyer on the planet Caprica. But those series kept me alive only for 6 episodes.
So say hello to the crew.

And if you gonna watch the series, you deffinetly need to watch the movies in between the series in this order.
CapricaSeason 0 GS Galactica - (Pilot) -
http://www.imdb.com/title/tt0407362/Season 1
Season 2
Bs Galactica : Razor -
http://www.imdb.com/title/tt0991178/Season 3
Season 4
Bs Galactica : The plan -
http://www.imdb.com/title/tt1286130/