Something I've noticed are advertisements for ERs. Really. I was a little shocked when I saw one on the way to work.

It says:

"Trouble breathing? Nausea and fever? Stomach pain? Our ER can help."

"What's your body telling you? Any one of these symptoms could be a warning sign of something serious. Our emergency room offers fast, expert care 24/7 to keep you healthy."

I had never really thought of hospitals, especially ERs, as a business before I saw that. I guess that was naive.