Amazon, Hulu, HBO, and more.Last updated May 24, 2020.What it's about: A team of three travel throughout time to save the future from a mysterious organization that wants to change historyWhy it's worth watching: Time travel shows can become messy affairs of paradoxes, brain-busting theories, and plot holes, but Eric Kripke's Timeless used time travel simply and splendidly in this throwback, swashbuckling adventure series.