Toasters beware! Battlestar Galactica's Edward James Olmos (Admiral Adama) and Mary McDonnell (President Roslin) are in the house! Olmos and McDonnell stopped by TVGuide.com for a lengthy and emotional interview about their journeys on four seasons of the hit Sci Fi show. We have so much good footage that we're splitting up the interview into several parts. Part 1 below features a candid conversation about Adama's and Roslin's strengths and weaknesses — including Adama's downward spiral into alcoholism this season. Also, watch to find out if either of them ever thought their characters were Cylons. Battlestar's final season begins Friday at 10 pm/ET.