The Time Machine (1960)
HG Wells' classic tale of a time-travelling scientist who goes from his home in 1900 into the future to discover civilisation has crumbled and that the human race has taken a rather shocking turn. The titular object is the most steampunk time machine ever.
Planet of the Apes (1968)
If you haven't already seen it, then we've just ruined it for you by including it in this list. Flipping world order on its head, the apes rule the world and keep the damn dirty humans as their slaves. Ordinarily, there is no situation that can't be improved by a man in a gorilla suit. Unfortunately for Charlton Heston, it's real gorillas that enslave the human race and not just an elaborate prank by his mates.
The Philadelphia Experiment (1984)
An experiment in 1943 to make a ship invisible to radar goes wrong and ends up catapulting two shipmates forward in time to 1984, in the Nevada desert. Cue wonder at modern technology and our time travelling friends being banged up in a mental asylum, Sarah Connor style.
Hot Tub Time Machine (2010)
A movie with the words "hot tub" and "time machine" was never going to be a cinematic masterpiece. But there are plenty of laughs to be had when a dodgy hot tub sends three friends and a nephew back to 1986 to relive their new found youth, while risking changing the future – and possibly erasing the nephew from existence.
Superman is the ultimate superhero – and the only person to ever get away with wearing pants over his tights. And he can turn back time. A few laps around Earth usually does it. It doesn't quite explain why reversing time never sends him hurtling back to Earth arse-over-tit, though.