Claustrophobic Time-Traveling Mindf**k

So the title sounds very sci-fi and intense, but really this is just my humble attempt at a list of movies that play with the concepts time and space. This includes real time, limited locations, extremely long takes, claustrophobia, time travel (well, sometimes) and any other criteria that seems to stretch the ordinary rules of time and space in cinema. Some of the films merely take place over the span of a single day or night.

I love suggestions!