At Copacabana Beach ...

... "[d]ancing cardinals warm up the crowd in Rio" before the Pope's appearance.

(I wouldn't call that a "flash mob," however.)

The countdown begins.

January 4, 2014: The Sound of Music Sing-a-Long is coming to Madison.

I will be ready.

The Baroness: "And somewhere out there, I think, is a young woman who will never be a nun."
 ...

(Later) The Captain: "Maria, there isn't going to be any Baroness. ... You see, you can't marry someone when you're in love with someone else."

Come on, you know the words!

"Galloping in Grand Central"

"Heard NY" is not the usual flash mob.

Purposeful Flash Mob

"Since 1955, Loes Veenstra has knitted over 550 sweaters and stored them in her home on the 2nd Carnissestraat in Rotterdam. The sweaters have never been worn. Until today."

This is not your Mother's Moscow.

Puttin' on the Ritz.