One of the most talked about aspects of the final season of Battlestar Galactica has been who will be revealed as the final Cylon. Many will argue (and rightfully so) that this show is much more than discovering who this final Cylon is, but the fact remains that this discovery is an important aspect of the show. Otherwise, why would such a reveal be such a well-kept secret? Because it makes good TV, that's why.

With four of the final five Cylons being revealed in the third season finale, lots of speculation is flying on who that fifth Cylon might be. There are two interesting theories in particular I want to mention.