Nitpick: Cally and Galen sleep with their heads at the end of the bed that is farthest from Nicky's crib. In Season 3, and in Cally's flashbacks of their lovemaking, they sleep with their heads at the other end of the bed.
In the scene where the rebel Cylon fleet jumps into the ambush, the stars of the Orion constellation are visible on the left side of the screen, including the three prominent stars that make up the "belt" of Orion.
Lee Adama joins the Quorum of the Twelve in this episode as the Colonial delegate representing Caprica.
The action in this episode takes place three weeks after the events of the previous episode, "Six of One."
Kara Thrace's crew aboard the freighter Demetrius includes at least nine other individuals. Among them are Sharon "Athena" Agathon, Karl "Helo" Agathon, Felix Gaeta, Diana Seelix, Lt. "Gonzo" Pike, the unnamed tattooed pilot (played by Leo Li Chiang), and Kara's husband, Samuel Anders. At least one of the crew members (Anders) volunteered for the mission (to find Earth).
Kara: It's like everything seems so far away. The way things feel, the way they taste, like I'm watching myself but not really experiencing it, not living it. Like my body is just this alien thing I'm still attached to. Does that seem crazy to you?
Kara: (to Sam) You dumb motherfrakker. I only married you because it was safe and it was easy, Sam, and you were just pathetic enough to go along with it. So get the frak out. (Sam doesn't move; Kara shoves him back until they are against the wall)
I don't want to fight, Sam. I want to frak. You don't get it, do you? I'm not the same girl you married. All I want to do right now is frak. Really frak, like it's the end of the world and nothing else matters. So go on, Sam. Make me feel something. I dare you.
Cottle: You're not crazy.
Cally: What would you call someone who all but proposes to a man after he breaks her jaw?
Cavil: Now really, Six, if you had wanted some room to spread out, you could've just asked.
Number Six: Is there anything that isn't fodder for a joke with you? Or is that really how you see our very existence, as some sort of nihilistic punchline?
Cavil: Nihilistic punchline? I like that. But quite honestly, I'm feeling very serious. Getting riddled with bullets affects me that way.
Tyrol: (to Tory) I used to know who I was. Galen Tyrol -- crew chief, husband, father. I look in the mirror nowadays, I don't even know what I am.
Boomer: But we're killing them. I mean, we're truly killing them. My own sisters.
Cavil: They can trust their god to watch over their immortal souls.
Boomer: But what about ours?
Cavil: We're machines, dear. Remember? We don't have souls.
When Tory strikes Cally, it is a good indication that the Final Five possess the enhanced strength of the regular human-form Cylon models.
This is at least the second episode to indicate that President Roslin enjoys mystery and detective novels. At her bedside, Adama reads the beginning of Chapter 1 from the hardboiled detective story Love and Bullets by fictional author Nick Talo. ("It started like it always did. With a body.")
In the Season 3 episode, "A Day in the Life," Roslin gave Adama a book titled Blood Runs at Midnight. She said that it was a good mystery story despite the title.
As of the opening credits, there are 39,676 survivors in the fleet, the same number listed in the previous episode.
Tricia Helfer read the "Previously on Battlestar Galactica" line at the beginning of this episode.
James Callis was credited in the opening titles although he did not appear in this episode.
Tom Zarek: A government of the people, for the people and answerable to the people.
This is a reference to the famous passage in President Abraham Lincoln's 1863 Gettysburg Address.
"...that we here highly resolve that these dead shall not have died in vain -- that this nation, under God, shall have a new birth of freedom -- and that government of the people, by the people, for the people, shall not perish from the earth."
Star Trek: The Next Generation
The number of the weapons locker, 1701D, is a clear reference to the registry number of the starship Enterprise-D on the famous sci-fi series Star Trek: The Next Generation. Developer and executive producer Ronald Moore got his start in the television industry as a writer on that show.