. D shot herself.
. "Elen is the fifth," the XO said.
. Cylon is the thirteenth tribe. (And, probably there are thirteen "Cylon" refugees from the Earth to the 12 Colonies, I guess.)
. The Earth is nuked (and exterminated) 2000 yrs ago, and it's still not inhabitable, which I suspect couldn't be true if the radiation is the problem. (The stronger it radiates, the shorter it persists.)
. They are heading for another system hoping that it has a inhabitable planet.
. They've got some "previous" lives.
. Starbuck found Starbuck.