The numbers in the license plate (4DQ5554) of the taxi, besides beginning and ending in 4, add up to 23. 4 and 23 are two of the Numbers.
During the scene where Jack was inspecting Sayid's gunshot wound, The wound was on the left side of Sayid. During the scene where he was shot in "The Incident, Part 1", he was shot on the right side of his stomach.
This episode marks the fourth occasion in the entire series where Sawyer is seen crying.
When Hurley asks Sayid if he was a zombie, this is an-inside reference to the running joke on the Official Lost Podcast that (the non-existent) Season 7 will be called "The Zombie Season."
The date on the sonogram October 22, 2004 is two days before Ethan Goodspeed, aka Ethan Rom, of the original timeline dies being shot to death by Charlie Pace on October 24, 2004 for trying to recapture a still pregnant Claire.
According to Gregg Nations (Writer and Producer), the date in Claire's sonogram contains both an error and a clue.
During the scene when Sawyer was holding the others at gunpoint his pistol changed. He started out with a Sig Sauer and left with a Glock.
In "Meet Kevin Johnson", the Temple was far enough away from the Barracks that it required a map to get there and the journey took a day and a half (according to Ben). In this episode, people go from the Temple to the Barracks within a short time period.
Kate's dialog when she hijacks the taxi differs slightly from the dialog in "LA X (Part 2)".
In the scene where Sawyer and Kate are on the pier, Sawyer's hair quickly changes form when he throws the ring in the water.
In the scene were Kate gets the handcuffs cut off, one of the cars has the date on the windshield. The date is May 2009.
Dogen is seen spinning a baseball on his desk. A baseball has 108 double stitches. 108 is the result of the sum of The Numbers.
Before Claire covers for Kate saying that she was just a cab driver who helped her into the hospital, she is looking at the ultrasound of unborn Aaron. The ultrasound is labeled with the date and time October 22, 2004 at 9:29am, one month after the crash of flight 815 in the original timeline.
Kate was the first character to have an episode dedicated to both their own flashbacks and their own flash sideways.
(after Sayid is healed)
Kate: How is that even possible? I mean, one minute he's gone and now he's fine?
Sawyer: Of course he's fine.
Kate: What does that mean?
Sawyer: He's an Iraqi torturer who shoots kids. He definitely deserves another go-around.
Sawyer: It's not your fault she's dead. It's mine. She was sittin' right there, right where you are now, tryin' to leave this place. And I convinced her to stay. I made her stay on this island 'cause I didn't want to be alone.
Kate: I'm sorry. I never should have followed you.
Sawyer: Which time?
Kate: A couple days ago, you asked me why I came back to the island. I need to find Claire. I thought ... maybe if I could catch up to you, you could help me, and then maybe if we could find her and bring her back to Aaron, then maybe all of this wouldn't be for nothing.
Lennon: Please. You don't have to do this. We won't hurt your friend...
Sawyer: He ain't my friend. Do what you want with him. And anybody else. But me? I'm walkin' outta here.
Sawyer: I'm gone! You understand?
Dogen: Please... you have to stay.
Sawyer: No. I don't.
(Sawyer removes the barricade and steps through the door, Kate stares at him)
Sawyer: Don't come after me.
Sayid: Who are these people? What do they want?
Hurley: It's the Others, dude. They caught us. Again. I don't know, I think they're... trying to protect us.
Miles: Yeah, and as you can see, Hugo here has assumed the... leadership position, so... that's pretty great.
The shot of Claire holding the gun was the first new footage of Season 6 to be released (eleven days before "LA X, Parts 1 & 2" premiered). It was shown briefly in a promo that was combined with footage from previous seasons.
Original International Air Dates:
Canada: February 9, 2010 on CTV
United Kingdom: February 12, 2010 on Sky1/Sky1 HD
New Zealand: February 24, 2010 on TV2
Finland: March 4, 2010 on Nelonen
Norway: March 17, 2010 on TVNorge
Germany: March 31, 2010 on FOX
Sweden: April 14, 2010 on TV4
Czech Republic: April 19, 2010 on AXN
Tania Kahale, who played Veronica, Aaron's nanny, in "Eggtown", appears in this episode as the admitting nurse (possibly the same character but in the alternate timeline).
Emilie de Ravin is incorrectly listed before Henry Ian Cusick.
Rob McElhenney reprises his role as Aldo from "Not in Portland", after a 50-episode absence.
This is Claire's first on-island appearance in the original timeline since the dream sequence in "There's No Place Like Home, Parts 2 & 3" and the first time as herself since "Cabin Fever".
Although credited, Nestor Carbonell (Richard), Henry Ian Cusick (Desmond), Michael Emerson (Ben), Jeff Fahey (Frank), Yunjin Kim (Sun), Terry O'Quinn (Locke) and Zuleikha Robinson (Ilana) do not appear in this episode.
A Kate-centric episode.
Star Trek: Deep Space Nine: Dogen has a baseball placed on his desk. In the TV series DS9, Benjamin Sisko, the commander of the station, used to have a baseball prominently placed on his desk throughout the entire run of the show. In the pilot episode, he used the baseball as a metaphor to explain the nature of linear time to the inhabitants of the wormhole, who experienced time all at once.
Star Wars Episode V: The Empire Strikes Back: After being tortured, Sayid says, "They didn't ask me any questions." This is similar to the line spoken by Han Solo after being tortured.
Sabrina, the Teenage Witch: Kate uses the alias "Joan Hart" at Angel of Mercy Hospital. This name resembles that of Melissa Joan Hart, the star of this series. Incidentally, Beth Broderick, who plays Kate's mother was Joan Hart's co-star on that series.
Back to the Future Part II: The same Dustin Hoffman line that Arzt shouts was recreated in the 1989 science fiction film Back to the Future Part II delivered by Michael J. Fox's character, Marty McFly Jr. The Back to the Future (film series) also centered around time travel, paradoxes, changing history and the impact they have on family relations.
Midnight Cowboy: Arzt shouts, "I'm walking here. I'm walking here!" This line is from the 1969 film Midnight Cowboy where the same dialog is delivered word-for-word by Dustin Hoffman's character, Ratso Rizzo. The line ranked #27 on AFI's list of the top 100 movie quotations in American cinema.