My favorite play in drama school was 'The Bacchae.' It's about a king who literally gets eaten alive by all the women in the play in a kind of orgy - it's related to the word 'bacchanal' - and I loved that idea of animalistic chaos and following our own desires.
I've always loved the old epics that tell a simple emotional story whether it's the tumultuous relationship between Rhett and Scarlett or Lawrence of Arabia's passion to get lost in a faraway place.