"Doctor Who: The Three Doctors"
Brigadier Lethbridge Stewart: Look, just tell me this: Are you or are you not the Doctor that I met during the Yeti business and then later when the Cybermen invaded?
Dr. Who: Of course I am. You can see that.
Brigadier Lethbridge Stewart: Right, but then you would subsequently appear on Earth during that trouble with the Autons, only then you'd changed into a tall, thin fellow.
Dr. Who: Had I really? How fascinating.
Brigadier Lethbridge Stewart: Doctor, I warn you...
Dr. Who: It's no use your asking me about all this, Brigadier. As far as I'm concerned, it hasn't happened yet. Don't you see? I'm just a temporal anomaly.
Brigadier Lethbridge Stewart: Now, there's just two things I want from you, Doctor: an effective way of controlling that stuff and the safe return of Miss Grant.
Sergeant Benton: Well, what about OUR Doctor, sir? Don't you want HIM back?
Brigadier Lethbridge Stewart: None of that nonsense, Benton. I've GOT him back. As long as he does the job, he can wear what face he likes.
Dr. Who: Well, I'll do my best, but I can't make any promises.
Brigadier Lethbridge Stewart: Well, in that case, you better consult with those all-powerful superiors of yours for THEIR advice.
Dr. Who: Oh, I don't think THAT would do any good. At the moment, they're FAR from being all-powerful. That's why it's been left up to me and me and me.
Brigadier Lethbridge Stewart: All right, now we're in here, what do we do?
Dr. Who: Well, we have a think. Care for a jelly baby?
Brigadier Lethbridge Stewart: [as the Doctor finishes conversing with his previous incarnation] Who in the name of heaven was that?
Dr. Who: I'm afraid you'd never believe me.