Funny thing, I also saw an old CSI that made this same misinformed assumption and presented it as fact.
Somebody rigs a construction site by disconnecting the ground to a GFCI, then puts a nail in a guys boot to create a path to ground. They then rig a hammer drill to energize the housing. The guy starts up the drill, gets hit, then falls several stories off of an open floor of the building.
The whole basis, which they state as fact, is that GFCI's do not work without a ground.
I think this guy may watch a little too much TV.
