When Langton and Echo go through logs (@time 21:17) and find the IP-address of the system-attacker, all shown addresses are IPv4. This standard only allows 4 sets of dot-separated numbers between 0 and 255, so all shown addresses are not actually possible. The IP of the attacker (146.143.317.286; in fiction a Rossum-server) actually begins with an IPv4-range (146.143) belonging to the Deutsches Forschungs Netz (DFN) in Germany.
Adelle: You've disrupted countless engagements, brought Alpha into my house, deceived me, with the help of poor Ballard, dragged Topher and Boyd into the fun, and now Victor and Sierra. You leave a wake of destruction wherever you go. There's only one place for a Doll as irreparably damaged as you.
Victor/Roger: Catherine, we need to talk.
Adelle: I don't want to talk. I want Roger. I want to roger Roger.
Adelle: You're not real. You're a Doll. One whose contract is up, and I was just getting in one last go-round before they release your body into the wild.
Topher: Do you see what I see?
Boyd: I don't see anything.
Boyd: You want her to suffer.
Adelle: Pain reveals who you really are. Let's see who this girl really is.
Topher: Welcome to the future, where cars fly, robots serve our every whim, and genetically engineered dinosaurs rule the earth.
Adelle: Well, I'm not surprised that Paul... and Boyd managed to keep your secret from me, but Topher? He can barely keep a belch to himself.
Adelle: All those people in your head, I know their deepest, darkest secrets. You're forgetting who put them there in the first place.
Echo: So now you're trying to take credit for making me? You didn't make me. I made me. You may think all these people knocking around in my head are useless, but that's 40 more brain than you have. So I think we can agree that I'm smarter, tougher, and a whole lot scarier than you could ever hope to be.
Ivy: Why didn't you let me in on this earlier?
Topher: You were on a need-to-know basis.
Ivy: Need-to-know or need-to-fetch?
Boyd: DeWitt's out cold. We got at least half the day.
Topher: Ooh, after we're done here, can I go to her office with a Sharpie?
Victor: I'm Anthony, by the way. You can call me Tony.
Victor: Nice to meet you. (shoots) So you're from Australia?
Sierra: Maybe we should save the small talk until after the gunfight.
Ivy: She shouldn't be able to do that.
Topher: Welcome to the conspiracy.
Ivy: Can I go back to getting you juice boxes?
When Langton is going over the details of Victor's release with him, Langton mentions that there is a suite at the Hyperion hotel reserved for him. The Hyperion is also the name of the fictional hotel that Angel, the title character of another of Joss Whedon's creations, used as his base of operations for much of that show's run.
UK: February 9, 2010 on Sci Fi
Australia: April 22, 2010 on FOX8
Czech Republic: April 30, 2010 on Prima COOL
Slovakia: March 1, 2012 on JOJ Plus
Tahmoh Penikett is credited but doesn't appear.
Music: Bad Romance (Lady Gaga)
The episode aired at 8/7 central on its premiere, followed be a second episode at 9/8 central.
Topher: You really think we'll be able to pull this off without Cruella DeWitt finding out?
Referencing Cruella De Vil, the main villain in the 1961 Disney movie One Hundred and One Dalmations, based on the novel The Hundred and One Dalmations (1956) by Dodie Smith. The character was voiced by Betty Lou Gerson, She was rated the 39th greatest villain of all time in AFI's 100 Years... 100 Heroes and Villain list in 2003.