I've had a thought, a couple of times now that Caprica Six and Ellen might be connected. For a start, they are the only Cylon models with blonde hair. For another thing, they are both VERY manipulative and both are willing to use their sexuality. Adama said in Tigh Me Up, Tigh Me Down, that Ellen had slept with practically every officer in the Fleet while Tigh was on maneuvers. How much do you bet that she was screwing senior Fleet brass to get access to classified Colonial Fleet documents. Another thing to bear in mind is that we are going to see Ellen in Battlestar Galactica: The Plan. We know that The Plan is about two Cylon agents plotting the downfall of the Colonies and we from the miniseries that one of those agents in Caprica Six. Could the other one be Ellen Tigh?