Den tredje doktorn och Jo Grant interagerar med framtida versioner av sig själva i episod 1 av Daleks Dal.
(The Doctor goes underneath the console. A moment later the doors to the lab open and a second Doctor and Jo are standing there.)
DOCTOR 2: Yes, of course, I remember now. Look, don't worry, my dear. I know you're alarmed but you needn't be.
DOCTOR: Yes, well I think that should do it. Why on Earth I never realised that.
(Then the Doctor sees himself standing there.)
DOCTOR: Oh, no. What are you doing here?
DOCTOR 2: Well, I'm not here. Don't worry. Well, that is, in a sense I am here, but you are not there. Yes, well, it's a bit difficult to explain really.
DOCTOR: This won't do at all. We can't have two of us running about.
DOCTOR 2: Yes, well don't worry. It will all sort itself -
(Flash, bang from the console and the duplicates vanish.)
JO: Doctor? What happened?
DOCTOR: Well, it's a very complicated thing, time, Jo. Once you've begun tampering with it, the oddest things start happening.
JO: But there was another you and another me. Well, where've they gone?
DOCTOR: Back into their own time stream, of course. Or do I mean forward?-- transcript