“Big Bang Theory”‘s Flash Mob (VIDEO)

The cast and crew of TV's "The Big Bang Theory" surprised producers by breaking into a flash mob to the tune of Carly Rae Jepsen's "Call Me Maybe" during a recent taping before a live audience.

"Big Bang" star Kaley Cuoco explained on the show's Facebook page that the stunt was her idea and recruited her sister Bri as choreographer. Bazinga!