Rosencrantz & Guildenstern Are Dead (1991)

A man talking sense to himself is no madder than a man talking nonsense not to himself.

Rosencrantz and Guildenstern, minor characters from the play 'Hamlet', find themselves on the road to Elsinore Castle at the behest of the King of Denmark. The duo encounter a band of players before arriving to find that they are needed to try to discern what troubles the prince Hamlet. Meanwhile, they ponder the meaning of their existence.