Things like that always freak me out with "supossed ghost videos" Remember watching a whole documentary about it a while back. Had me so nervous and feeling uneasy. Sure it was just a camera guy or something walking there. But have to admit it is odd.
I don't believe in that one ;D BUT there is this other one you might've seen. It could be down to the helicopter movement, or the camera angle, but this looks pretty real to me. Look closely at the helicopter, there's a white sheet behind the guy hanging out, which is covering Jackson's body. Look as it just goes out of view. It moves :o Jacko Alive?