in that episode-where the guy who blew up the lab to get drugs goes into hospital, he's all angry at somethingand gives a little start and the pad that is plugging his wound (in his shoulder)falls to the ground. next shot it's on his wound again and then the nixt shot it isn't and the next shot it is.

it's really ovious but i can't tell you the exact timing or anything 'cause it was only just on tv last week/