Them Crazy Transformin' Eyes

The freaky thing about old Transformers commercials was that one segment where they get a kid to lip-sync the classic tagline: "Robots in Disguise" (which was, naturally, in a robot voice.) In earlier commercials, they merely made a snarling kid's eyes glow an unearthly green. But in later commercials, miraculous advancements in video editing made it possible for a kid to "transform" into a given robot. Scary, yet effective.