Title: Elevator.
Question: Once activatated, what is the only way to deactivate it?

Title: A cappella.
Question: What is the name of the a cappella musical that debuted Off-Broadway in the same year as Perfect Harmony?

Title: Solar energy.
Question: Socrate's what is a classic example of passive solar design?

Title: PlayStation 3.
Question:
What PlayStation 3 feature did Home Theater Magazine most like about PS3?