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.