25 Greatest Sci-Fi TV Shows Of All Time

25. Quantum Leap

What happens when the government threatens to pull funding on your life's research into time travel? Why, you test that life's research on yourself and catapult out of existence and into the timeline. Yup, that's pretty much the premise for the '90s small screen spectacle that was Quantum Leap.

Physicist Sam Beckett's attempts to prove his theory correct before he was shut down resulted in him trapped in a repetitive battle with time (hello plot-of-the-week convention!) in which he landed in a random person/creature's body and had to set history right in order to return home - which never happened and only resulted in a new time mission the following week.

Quantum Leap was definitely one of the more creative uses of the genre and it probably wouldn't have worked in any other period, but the layers of cheese associated with '80s and early '90s television ensured that it did, while its often humorous tone allowed it to embrace that hilarity - in the same way that DC's Legends of Tomorrow does today.

It's just a shame that it was all let down by a poor creative decision in the series finale.