One of the cool things about being a Cylon--you can have an unlimited number of death scenes.
It might be left to the male Cylons to carry the flag of Cylon villainy now, but I wouldn't expect to see Dean for a while. I think the next episodes will be focusing on the Galactica and we won't see baseships. So my *guess* is that we'll most likely see Dean again in the season finale. It seems like they're saving him for the "big" episodes.
I found a blooper! When he's pointing the gun at D'Anna, first it's in his right hand, then his left hand, then his right hand again.