This happens towards the end of Hell House right after Sam and Dean had shot at the ghost who busted out of the basement at them welding an ax and the two amatuer paranormalists are nervously checking their camera to see if they'd caught the action.

If you look to the right of the bearded paranormalist, a crew member who looks too be filming the screen steps about a quarter ways into the screen. He is wearing a short-sleeved shirt and stays in view for quite a few seconds.