One of the unique things about TV is that is often has a long development process, but once something is committed to film, it’s almost certainly set in stone, so to speak. The first episode is almost always the pilot–that first proof-of-concept episode that’s made to sell the network on the idea. There are also spinoffs, which often get a strong upfront order based on the power of the parent show’s name alone (Like Star Trek Voyager, or Doctor Who‘s new spinoff, Class).

But some shows end up taking a rather roundabout approach to get to air; an online video, or a testbed short film is shown to the public without commitments. Viewers react positively, and boom! A show is born. Here are 4 shows that followed an unusual path through the development pipeline, and the 4 earliest SF prototypes that led to their creation.

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