 Some television broadcasts also have two little extra moments not shown in  the theatrical/video release during the scene where Clark gives Lana a  diamond ring. Instead of ringing Lanas doorbell, Clark knocks on the door  with a "Shave and a Haircut" melody, which is copied by a man knocking on a  door behind him. This explains why Clark is looking back when Lana opens her  door. Also, after Clark sends Brad speeding back into an elevator on top of a  food trolley, a lady assistant remarks "No wonder they send it back."