Didn't one of the classic CRM fatality cases occour when the Capt and F/E ganged up on the F/O - 'What's the difference between a duck and an F/O? A duck can fly.'
Yeah. That was Alaska Airlines in Ketchikan, Alaska in 1976.
The FO kept raising "trial balloons"--dropping hints about being too high, too fast, etc.
As they overran the runway the last words on the CVR were the FOs: "I told you!"