in Season 1 Ep. 8 of SVU, they are trying to find a dangerous perp who stalks women in power, rapes them, and kills them. During the episode Olivia interrogates him and he threatens her. They then find evidence that he has been stalking her as well. Detective Stabler goes to her house the next morning to give her a ride to work and when she first opens the door 29:19 the orange juice is the same level as when she poured it. Then magically at 29:43 while she is talking, with no time to drink out of it, the level in the glass drops drastically. Then exactly 3 second later after the camera angle changes the level in the glass rises, but not up to it's original level. Funny huh?