Speaking of mind bending, Coherence (watch free on YouTube) is another story that deals with time travel in a very unique way - and this one involves a group of people in a localized area and the concept of parallel existence.
Eight friends at a dinner party experience a troubling chain of events due to the malevolent influence of a passing comet. A deceptively simple film made with minimal cast, crew, and budget, the story quickly becomes a psychological and emotional thriller.
As it becomes clear to the guests that there may be more than one version of the house they are gathering in, the creeps set in. This plays out a bit like a great Twilight Zone episode, but with more depth and more at stake. In the end, one of the protagonists has to make a critical choice. This one will leave you thinking about it for quite some time!