Battlestar Galactica's President Roslin and Admiral Adama have been through a lot in the last four seasons of the show, and things show no signs of improving. In part four of our video series, Edward James Olmos discusses Adama's descent into alcohol and drug addiction, while McDonnell talks about the difficult decisions Roslin's had to make — and what she thinks the Roslin legacy will be.

BSG's stars talk Adama's descent and Roslin's legacy.

In this installment of our interview with Edward James Olmos and Mary McDonnell, the Battlestar Galactica stars talk about the present and future state of their characters.|Battlestar Galactica|Edward James Olmos|Mary McDonnell|Erin Fox|