Via this thread on MetaFilter, I've discovered “In Passing”, a collection of the random things the author sees and overhears on a daily basis. For instance:
“It’s really hard not to go up to an intern in the middle of surgery and say, ‘Don’t freak out, but you're doing that all wrong.’ I try not to do it if the patient’s only under local.”
— A man talking to a group of men on the patio at Raleigh’s.