 Jeannot Szwarc (qv) ran into a small problem directing both  Christopher Reeve (qv) and Christopher Plummer (I) (qv) in the  same scene. When he said, "Chris," both men replied, "Yes?" He said  that this would never do, so he consulted with producer Stephen  Deutsch, and together they decided that from now on, Christopher  Plummer would be known as "Mr. Plummer", and Christopher Reeve would  be known as "Bigfoot".