When Peter is trapped in the subway car while time is frozen, the camera spans the various people in the subway who were frozen in time. One man is in the midst of dropping his brief case, spilling all of its contents onto the ground. After Hiro leaves Peter and time unfreezes-at about 1:32 into the show-if you look in the bottom right hand corner you can see the business man in the background leaning down to pick up his fallen papers, only, there's nothing on the ground to pick up and his hands are grabbing at nothing for a total of two times before the scene changes.