Totally unscripted, real and random.
Those are the best ones, as this one is.
This episode is Ira, along with a playwright out of Chicago, bring the writer's shows of people reading random letters to This American Life. Ira pulls names out of a hat and people get on stage with their letters, some written by themselves, some by others- there's even some found letters, too.
The hour passes quickly with the letters and share little pieces of different folks' lives.
Let's just say it- I want more!