Explore groundbreaking sci-fi TV shows that were ahead of their time and how they continue to impact the genre today, from Star Trek to Doctor Who.

Sci-fi is an enduring genre on the small screen, even if the budgets couldn't always match the big screen, and these are the best sci-fi shows ever.

The 1960s saw a whole host of hugely successful sci-fi series. "Star Trek" went on to amass one of the most dedicated fan followings of any major franchise. "Doctor Who" eventually became the longest ...