Don't know if this has been done before, but i'm pretty sure it hasn't!
The rules are simple; you answer the above person's would you rather, explain why, then give your own.
Joe: Would you rather be trapped in an elevator for two hours with; Darth Vader, or The Terminator?
Bob: The Terminator, Darth Vader would more likely kill me...
Would you rather be thrown into a Sarlaac, or be a test subject of Valik's?