In this one-off Comic Relief special, the Doctor, Amy, and Rory find themselves trapped in the TARDIS when it materializes inside of itself, but receive help from a special ally.
The Eleventh Doctor
When the Doctor enters the internal TARDIS for the first time, there isn't a past/ future version of himself unlike the rest of the episode.
Amy: Listen, can we talk?
The Doctor: Rory!
Amy: No, shut up, I just got a quick question, that's all.
Rory: I didn't get that.
The Doctor: Yep, fine, no problem.
The Doctor: It's fine, we're entering conceptual space. Imagine a banana, or anything curved. Well, actually, don't, because its not curved or like a banana. Forget the banana.
Amy: How come he gets a go? You never let me have a go at it.
Rory: Uh, Doctor, don't. Seriously, I let her drive my car once.
Amy: Yeah, to the end of the road.
Rory: Where, according to Amy, there was an unexpected house.
Amy: He's jealous because I passed my test first time.
Rory: You cheated. You wore a skirt.
Amy: I didn't wear a skirt. (the Doctor glances at her legs)
Rory: Luck would have worked to.
Amy: No, no, I did wear a skirt. But it was any old skirt.
Rory: Have you ever seen Amy drive, Doctor?
The Doctor: Nope!
Rory: Neither did her driving examiner.
The Doctor: How did you do that? I told you, don't drop them. I specifically mentioned not dropping them.
Amy: It... it was my fault.
The Doctor: Of course it wasn't your fault.
Rory: It kind of was her fault.
The Doctor: How could it be her fault?
Amy: Because it was my skirt, and my husband, and your glass floor.
The Doctor: Ohhh, Rory!
Amy: Doctor, what's happened?
The Doctor: Safest spot available. The TARDIS has materialised inside of itself.
Rory: Is that supposed to happen?
The Doctor: Take a guess.
The Doctor: That's the one.
The Doctor: Okay, when does this Amy step inside the box? We need to maintain a timeline.
Amy-Two: Ah, as soon as she slapped Rory.
Rory: Huh. No, why do I get slapped?
The Doctor: Because we have to stick to the established chain of events. One mistake and the whole timeline could collapse. We'd end up with two Amy Ponds forever, and then what would you do?
(Rory thinks about it, Amy slaps him)
Amy: Do I really look like that?
Amy-Two: Yeah. Yeah, you do.
Amy: Umm. I'd give you your driver's license.
Amy-Two: I bet you would.
The Doctor: Ohhh, this is how it all ends. Pond flirting with herself. True love at last. Oh, sorry Rory.
Rory: Absolutely no problem at all.
The Doctor: Okay, we're back in normal flight. The TARDIS is no longer inside itself, the localised time field is no longer about to implode and rip a hole in all casualty. But just in case... Pond, put some trousers on.
This two-part special aired on Comic Relief's March 2011 special, with each segment, Space and Time, running three minutes.
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