When Doctor is eating the apple after meeting young Amy, it is red. However, when he spits it out, the apple is reddish-green.
In the DVD extra scene, Amy continues to insult the Doctor about his appearance and is told he's an alien. She makes fun of his hair, chin, and bow tie; she wonders if his bow tie is a cry for help. When she's told by the Doctor that he's an alien, she wonders if he's a 'space squid zip inside a human suit' or a "space slug" because of how he walks, but is told he is physically humanoid as he appears.
When the Doctor is showing Amy the TARDIS, the close-ups of his hands on the dials have a different shirt than the wide shots.
Although the Doctor claims to have "protected" Earth from various aliens shown on the Atraxi hologram projector, the Ood, the Hath, and the Vashta Nerada have never attacked Earth.
Note the license plate on Rory's car: It plays at saying "NICE GUY".
When the Doctor makes his fire engine aided entrance into the hospital, the two young girls who make up Prisoner Zero switch sides from left to right and then return to their original positions by the time the Doctor arrives.
The Doctor opens the TARDIS by snapping his fingers. He last did this (and discovered he could) in Forest of the Dead. This episode was also written by Steven Moffat.
The Doctor uses the phrase "Wibbley-wobbley timey-wimey", which his previous incarnation first used in Blink and again in Time Crash. Both episodes were also written by Steven Moffat.
Prisoner Zero: The universe is cracked. The Pandorica will open. Silence will fall.
The Doctor: Look at that.
Amelia: Are you okay?
The Doctor: Just had a fall. All the way down there, right to the library. Hell of a climb back up.
Amelia: You're soaking wet.
The Doctor: I was in the swimming pool.
Amelia: You said you were in the library.
The Doctor: So was the swimming pool.
The Doctor: Ah, you see. Beans. (eats them) Beans are evil. Bad, bad beans.
The Doctor: I'll be right back.
Amelia: People always say that.
The Doctor: Am I people? Do I even look like people? Trust me. I'm the Doctor.
Amy: Will that door hold it?
The Doctor: Oh, yeah, yeah. Of course. It's an interdimensional multi-form from outer space. They're all terrified of wood.
Amy: You came back.
The Doctor: Of course I came back. I always come back. There's nothing wrong with that.
Amy: But you kept the clothes.
The Doctor: Well, I just saved the world. The whole planet, for about the millionth time. No charge. Yeah, shoot me. I kept the clothes.
Amy: Including the bow tie.
The Doctor: Yeah, it's cool. Bow ties are cool.
The Doctor: Listen to me. In 10 minutes, you're going to be a legend. In 10 minutes, everyone on that screen is going to be offering you any job you want. But first, you have to be magnificent. You have to make them trust you and get them working. This is it, Jeff. This is when you fly. Today's the day you save the world.
Jeff: ...Why me?
The Doctor: It's your bedroom.
The Doctor: Do you know what this phone is full of? Pictures of you. Every form you've learned to take, right here. Oh, and being uploaded about... now. And the final score is: No TARDIS, No screwdriver, two minutes to spare... WHO DA MAN?! (silence) I'm never saying that again. Fine.
Amelia: Who are you?
The Doctor: I don't know yet. I'm still cooking.
The Doctor: What's your name?
Amelia: Amelia Pond.
The Doctor: Oh, that's a brilliant name. Amelia Pond. Like a name in a fairy tale. Are we in Scotland, Amelia?
Amelia: No. I had to move to England. It's rubbish.
The Doctor: You know when grown-ups tell you everything's going to be fine and you think they're probably lying to make you feel better?
The Doctor: Everything's going to be fine.
The Doctor: Amy Pond. The girl who waited. You waited long enough.
Amy: When I was a kid, you said there was a swimming pool. And a library, and the swimming pool was in the library.
The Doctor: Yeah, not sure where it's got to now. It'll turn up. So, coming?
The Doctor: You wanted to come 14 years ago.
Amy: I grew up.
The Doctor: Don't worry. I'll soon fix that.
The Doctor: I'm not 6 months late, I'm 12 years late!
Amy: He's coming!
The Doctor: You said 6 months. Why did you say 6 months?!
Amy: We've got to go!
The Doctor: This matters! This is important. Why did you say 6 months?
Amy: WELL WHY DID YOU SAY 5 MINUTES?!
The Doctor: What?
Amy: Come on!
The Doctor: What?
Amy: Come on!
The Doctor: What?!
The Doctor: I'm the Doctor. Do everything I tell you. Don't ask stupid questions. And don't wander off.
The Doctor: You're Amelia!
Amy: You're late.
The Doctor: ...Amelia Pond, you're the little girl!
Amy: I'm Amelia, and you're late.
The Doctor: What happened?
Amy: Twelve years.
The Doctor: You hit me with a cricket bat.
Amy: Twelve years!
The Doctor: A cricket bat!
Amy: Twelve years and four psychiatrists.
The Doctor: Four?
Amy: I kept biting them.
The Doctor: Why?
Amy: They said you weren't real.
The Doctor: And what sort of job's a kiss-o-gram?
Amy: I go to parties and I kiss people. (clears throat) With outfits. It's a laugh!
The Doctor: You were a little girl five minutes ago.
Amy: You're worse than my aunt!
The Doctor: I'm the Doctor. I'm worse than everybody's aunt!
(The Doctor speaking to Amy)
The Doctor: Your friend! What was his name?
(The Doctor points to Rory)
The Doctor: Not him, the good looking one.
Rory: (sarcastically) Thanks.
Rory: (more sarcastically) OH thanks.
(The Doctor runs into a room in which Jeff is on a bed with a laptop)
The Doctor: Hello. Laptop. Gimme.
Jeff: No, no, no, no, no... Hang on!!!
The Doctor: Give it here.
(takes the laptop from Jeff, and notices the contents of the screen)
The Doctor: Blimey, get a girlfriend, Jeff...
The Doctor: So, you okay, then? 'Cause this place, sometimes it can make people feel a bit, you know.
Amy: I'm fine. Fine. It's just... there's a whole world in here, just like you said. It's all true. I thought, well, I was starting to think that maybe you were just, like, a madman with a box.
The Doctor: Amy Pond, there's something you better understand about me, 'cause it's important and, one day, your life may depend on it: I am definitely a madman with a box.
(Prisoner Zero takes on the Doctor's form)
The Doctor: Well, that's a bit rubbish. Who's he supposed to be?
Rory: That's you.
The Doctor: It's me? That's what I look like?
Rory: You mean you don't know?
The Doctor: (shrugs) Busy day.
The Doctor: Why does no-one ever listen to me? Do I just have a face that nobody listens to... again?
Amy: Where are you going?
The Doctor: The roof. No, hang on.
Amy: What's in here?
The Doctor: I'm saving the world. I need a decent shirt. To hell with the raggedy. Time to put on a show.
The Doctor: The Doctor will see you now!
Alien Guard: You are not of this world.
The Doctor: No but I've put a lot work into it.
Alien Guard: Is this world important?
The Doctor: Important? What that's mean, important? Six billion people live here, is that important? Here's a better question: is this world a threat to the Atraxi? Oh come on, you're monitoring the whole planet! Is this world a threat?
Alien Guard: No.
The Doctor: Are the peoples of this world guilty of any crime by the laws of the Atraxi?
Alien Guard: No.
The Doctor: Okay. One more, just one: is this world protected? 'Cause you're not the first one to attack it. Oh they've been so many. And what you've got to ask is, what happened to them?
(a montage of the past 10 Doctors is looked at by the Atraxi)
The Doctor: Hello! I'm the Doctor. Basically, run.
The Doctor: (regarding the new TARDIS interior) Look at you... Oh, you sexy thing! Look at you!
The montage the Atraxi project is made up of scenes from previous Doctor Who episodes, all featuring various aliens and races that have, as the Doctor mentions, attacked humanity in some way. Among the featured are (in order of appearance): Cybermen (Rise of the Cybermen), Daleks (Doomsday), Pyrovile (The Fires of Pompeii), Empress of the Racnoss (The Runaway Bride), Ood (Planet of the Ood), Sycorax Leader (The Christmas Invasion), Sontaran (The Time Warrior), Sea Devils (The Sea Devils), Reaper (Father's Day), Hath (The Doctor's Daughter), Vashta Nerada victim (Silence in the Library)
In the DVD extra, the Doctor explains how a functioning Chameleon Circuit is supposed to work. "It scans the 100 mile radius within the first nano second of landing to determine which outer shell would best fit in with their surroundings and then it disguises itself as a police box from 1963." The Doctor also lies about how long the malfunction with the Circuit has been happening.
International Air Dates: 17 April, 2010 on BBC America
The Doctor's line, "No, but I've put a lot of work into it," is Stephen Moffat referencing his own writing. The non-canon "Ninth Doctor" used a similar line in "Doctor Who and the Curse of the Fatal Death, Part 4", although he refers to the universe, not just Earth.
After the Doctor's Sonic Screwdriver blows up when he uses it to try to alert the Atraxi, the rebuilt TARDIS provides him with a new version. The new Sonic Screwdriver has a brass-plated handle, and has a green diode instead of a blue one.
After recovering from the crash landing, the Doctor's TARDIS gains an entirely new interior, with a multi-level console room, redesigned time rotor, and a new console with various paraphenalia (from a gramophone to hot and cold taps), attached. The exterior is also redesigned, with new frames around the windows, and a St. John Ambulance logo on the door.
A new version of the opening title sequence, featuring a new musical arrangement, and a new depiction of the Time Vortex, debuts. The new logo, with a "DW" in the shape of a TARDIS inserted between "Doctor" and "Who," is featured.
The Doctor stealing clothes from a hospital.
During the 1963-1989 series of Doctor Who, the Doctor stole clothes from a hospital after a regeneration. The first time he stole clothes was after regenerating into the Third Doctor. He stole them from Ashbridge Cottage Hospital. The second time before this was after he regenerated into his Eighth incarnation. The Doctor took a Wild Bill Hickok costume from a San Francisco hospital.
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