'Big Bang Theory' Cast Stages 'Call Me Maybe' Flashmob [VIDEO]

While Mashable has already declared Carly Rae Jepsen's "Call Me Maybe" dead, this flash mob by the cast of "The Big Bang Theory" is too amazing not to cover.

All seems normal on set at first, but when the director calls "Action," the now-familiar refrain begins to chime. The cast seems confused at first, but remember -- they're actors.

Leave it to Sheldon to have the last word.