I recall being at a lunch once with a fairly prominent British sport's commentator who had started out on the radio, but moved onto television. The hardest thing, he said, about the new medium was to adapt to the fact that it did much of the heavy lifting for you - you had to train yourself to let it. Mary Pickford - who won an Oscar for this - still wanted to be a silent film star here. She couldn't quite let the dialogue do her heavy lifting for her - and the result is an over-cooked performance that at time borders on the hysterical. It is a simple enough story - her father (John St.…