Logan's run TV series (1977-1978) Logan, and Jessica then and now
Logan's run TV series Logan (Gregory Harrison), and Jessica (Heather Menzies) before and after. (Sources: Logan's Run and http://www.heathermenziesurich.com)
Undoubtedly one of the best science fiction series of all time. Two outcasts roam a post apocalyptic world, encountering various people and Orwellian societies living in isolation from each other. Reminds one to an extent of The Prisoner, but with a take on modern day society, rather than the individual's dehumanization by it. Like The Prisoner, this series only has a few episodes, but each episode is set in an entirely different set.