When I worked at a particular fruit company in Cupertino, my boss had been asked repeatedly by the developer teams to provide a tour of the data center we'd recently finished building out, which housed the servers their code ran on.

He gave them a lengthy, grueling, hyper-detailed tour of the entire facility, encompassing the HVAC systems, electrical systems, network and computing systems, finishing with about 20 minutes where he had them stand inside a hot aisle that he was just outside of, giving a fantastic soliloquy on the importance of code efficiency, and the consequences of ignoring it. It was hilarious to watch from the comfort of the cold aisle, knowing full well what he was doing.