I have a CD that has Leonard Nimoy and John DeLancie arguing, in character as Spock and Q respectively, about whether the Earth should be saved from an incoming asteroid.
Part of the discussion is a riddle game, and of the riddles, this is my favourite:
Everyone knows me.
Once, it is rumoured, a man drank his fill of me (much to his regret).
Others prefer me in small doses for small ailments.
Some describe me as an age, a tongue, the sky, the land
Fire, bird, fish, flower.
I am captive; I am free;
Loved and eschewed,
Pure and corrupt,
Black and white.
I am found in the deepest mine and on the highest mountain,
I am animal, vegetable, mineral.
Who am I?