10 Best Science Fiction Movies (Not Set In Space)

A group of friends attending a dinner party experience a power outage and, thanks to a mysterious comet passing by the Earth, a series of brain-twisting, reality-splitting, moral-shattering consequences ensue.

That sentence alone should be proof enough of Coherence's sci-fi credentials, and so much more. This sets up an understated, high concept film that stars a lesser-spotted Nicholas Brendon (Xander from Buffy the Vampire Slayer), occasionally alongside his real life twin brother, Kelly Donovan, put together by James Ward Byrkit, with a micro-budget and ingenious central premise.

It is hard to say much about Coherence without giving the game away, but we can safely say the film gives its middle-class dinner party of eight characters just enough metaphysical rope to hang themselves with.

It is also testament of the film's quality and genre skills that it is often heralded as one of the best time travel films of the past decade, despite not actually have any apparent time travel in it.