Originally, referred to emotionally moving
rock concert attendees to states of high
enthusiasm. By
extension, raising any crowd who share interests -- such as music, politics, or religion -- to a state of high enthusiasm.
The warmup act was lame, but
the Stones really rocked the house.
Correct me
if I'm wrong, but in her speech last night, Hillary Clinton really rocked the house. -- Barack Obama
That
minister really rocked the house.