Red Dwarf, Series VI

[The Dwarfers acquire a time travel device, testing it out by sending the ship to the year 1421]

Rimmer:
Give us visual. Let's see what it's like out there.

Lister:
Okay, punching it up.

[They see nothing but empty space]

Lister:
Hey, I don't get it! We're still where we were!

Kryten:
Of course. We're still in deep space, sir, only now we're in deep space in the 15th century. Isn't it wonderful?

Rimmer:
So we're still three million years away from Earth?

Kryten:
Well, yes.

Lister:
[Sighs] Taking her back to the present.

Kryten:
Keyed in. Engage.

[They go forward in time]

Rimmer:
So forgive me if I'm being thicker than the offspring of a village idiot and a TV weather girl, but what was the point of that little exercise? Fun though it was drinking in the heady medieval atmosphere of Pre-Renaissance deep space, the drive is next to useless, yes?