Rosencrantz & Guildenstern Are Dead (1990)
Most likely, you have no idea what this even is. And I pity you.
Now, I expect you to know of Hamlet. And even if you didn't read that, you should know how it goes. And you may know that Rosencrantz & Guildenstern are pretty much the most insignificant and least explored characters in the play. They always appear together, try to talk to Hamlet, fail, receive orders to take Hamlet to England to kill him there, fail in that also and die after arriving in England. Well, a man named Tom Stoppard made a play where he put the centre of the story on these two characters. And later it became a movie with great actors Gary Oldman and Tim Roth.
You see, these characters do not do much, really, during the play. So, while they are out of the picture, what can they do but wander backstage, think about their situation and talk about various subjects? So that is what they do. And since they are not very well fleshed out as characters, they don't even know which one of them is which. Hell, even other characters clearly have no idea.
And that's all it is, really - two confused characters trying to figure out what is their role in the play, really? And somehow along the way they have talks about the laws of probability, about life and death and about all sorts of things. Along with bucketful of play on words, puns and even anachronisms.
The movie is goddamn great, even though all that is happening there is just people talking. And it's one of those movies you must see, and you should see it more than once to really get not just all what is happening, but to try and craft your own version of what this all means. And, as an added value, it's great fun and entertainment!