Rosencrantz & Guildenstern Are Dead
Rosencrantz & Guildenstern Are Dead is a popular 1966 play by Tom Stoppard. It is, effectively, a fan fiction spinoff of Shakespeare's "Hamlet", in which the story is re-told through the eyes of the minor "Hamlet" characters Rosencrantz and Guildenstern. The comedy explores topics such as existentialism, free will vs. determinism, and the futilites of language.
The play was adapted into a 1990 film, directed by Stoppard, starring Gary Oldman and Tim Roth as the title characters.