Quite major spoiler for S4.5 (and one I like very much):
(from this interview
http://www.fhmonline.com/girls_girls_of_fh...amp;idx_id=6350 )
Grace Park: "You’re going to get to see a wrapping up of all the events that have occurred and you’ll find out who survives, who dies, and who the final Cylon is.
There’s another interaction between my two characters, Boomer and Athena, and there’s a lot of history we finally clear up with them"