holy crap, this is super creepy. i remember seeing a story once on dateline or one of those shows about people that secretly live in your house (phrogging) and thought it was crazy. today, over @ boing boing i saw this video and wanted to share.
here's more info.
many of the commenters on the site are calling the vid a fake, and they seem to have some valid points. having said that, it's still a super creepy thought.