This afternoon, I was thinking about Doctor Who and the way in which daleks and cybermen always return. Even after they've been utterly destroyed and gotten rid of and shall never be seen again.
But next series, there they are again.
Having hidden behind the sofa.
Just brush off the cat fur, and there we are. Like some sort of elderly relative wheeled out at Christmas. They're ready to go again, away to terrorise the solar system and try to bring the universe to an end. Or destroy all humanity. Or hand out elderly peppermints. Or whatever their latest activity may be.
All that said, I still really like Doctor Who and not just because David Tennant is in it. But really, what about a new kind of monster/alien being that's appropriately humanity-free and wonderfully intimidating?