Interesting column from a few years ago I stumbled upon today:
POOR LITTLE PHONY - NYPOST.com
"His face was impassive, slack, bored: Another crowd, another show. Nothing wrong with that - just a professional at work. But then, I saw the thing that stuck with me: As his introduction reached its climax, he straightened, and turned on a thousand-watt smile as easily and artificially as flipping a switch.
He assumed the look of a man who had just, quite unexpectedly, run into a long-lost best friend..."