Heard a story about Ken Russell (now the late Ken Russell, sadly) when he was directing the famously terrible 'Lair of the White Worm'. The mornings would go ok, but then he would go to lunch and knock back two bottles of wine. So after lunch his acting note to everyone was simply "Bigger! BIGGER". So the performances would get bigger and sillier and more broad, until finally everyone was acting as if they were in a Carry On film. At that point he yelled "PERFECT! NOW...DOUBLE IT!"