The Man from Earth (2007)
This movie is all talk, but it's fascinating talk. Much more interesting than the more famous all-talk movie, My Dinner with Andre (1981). A popular college professor, in line for promotion, decides to leave instead. His friends hold a going-away party and ask why he's leaving. At first reluctantly, he tells them. They are shocked and for the rest of the movie they try to determine if what he says could possibly be true.
Any review or the DVD box itself would reveal the premise but it's more fun to watch this movie cold and be surprised along with the other characters. I do think the title is misleading. The movie takes place on Earth and everyone in it is from Earth.
Note: there is a sequel, The Man from Earth: Holocene (2017). It's not worth the bother.
A smart movie about not-so-smart people doing foolish and bad things around 11:14 PM, often due to their misunderstanding of other things that have just happened. The movie follows one person or group during the time period, then rewinds and follows another. Each perspective explains more of what we've already seen but didn't fully understand. It's like a jigsaw puzzle that makes more sense as we fit the pieces together.