Currently reading a little Aristophanes. Specifically, Clouds. It is fun because one of the characters is Socrates. In the Apology, Socrates, as written by Plato, claims that his accusers are responding to the characterization of him in dramas rather than in real life. Interesting.
Anyway, it made me think back to the book of Job, which I believe can be fairly treated as a script. Consider the first chapter here. The author of Job was much more given to long speeches though.