The series of your one-shot

Seeing the recent Twilight Zone revival and thinking about the threads of converting series into anthology episodes, how much did it go the other way? Which episodes could be the premise of a series?

I know Battlestar Galactica bears more than a passing resemblance to a Twilight Zone episode, among others.

The mysterious salesman who might be the Devil pops up a few times, though not played the same. A bunch of the space episodes could make Star Trek hooks with the addition of a way out of the problem. I could see Mirror Image becoming a series about pursuing your doppelganger in the style of The Invaders.