Toy Box - Best Friend: Wow. Just... wow.
Sarah Brightman - I Lost My Heart (to a Starship Trooper): This video is slightly disturbing in more ways than one. I can't find the real video; this is for the movie, "Starship Troopers", in which the aliens really did nothing wrong, but let's save that rant for another time. Also, if you don't call this song by it's full title, it's called "I Lost My Heart". Also disturbing. There is a good part, though - a starship trooper throws a grenade at an alien, who eats it, and then looks at the camera like, "Oh shi-". I thought that was funny.
Eiffel 65 - I'm Blue: For some reason, I find something inherently creepy about this video. And yes, it's the real one.
Linkin Park - Papercut: This may be the most disturbing thing I have ever seen. I'm not kidding. There's the puppet, and the fishnet monster, and the grey blob that explodes into a swarm of locusts... Eeergh. (a close runner-up was "Breaking the Habit", but this beats it.)
xXCostelloXx
blue and best friends PWN!!!!!!