 SYNC: When Robert Graysmith visits Paul Avery at his boathouse you  can see Pong being displayed in the background on Pauls TV. As the  scene plays out you can hear the Pong ball bouncing around for a  while, then the sound of the ball scoring. If you watch the TV  though you will see that its the same shot of the ball bouncing  once then going past the paddle on the right and scoring.