Light Flicker Teleportation

The lights flicker on and off. In the less-than-a-second of darkness, the character the camera was previously focused on has disappeared. After another flicker, he will reappear, closer to the POV camera/ other characters. Can be done repeatedly to great effect if the camera doesn't move. Usually done by villains, though it can be done by an Anti-Hero wishing to scare some mooks. Sometimes the "flicker" effect is achieved by the POV character's eyes closing, usually involuntarily.

Related to Offscreen Teleportation.

Comics

 * Batman's probably done this once or twice.
 * Batman: Arkham Asylum: One of the Game Over screens has the Scarecrow do this.

Live Action Television

 * Doctor Who: This trope is used to good effect for the Weeping Angels, angelic statues that animate when no one's looking at them (or in darkness). So when the lights are flickering, you see their slow transformation into horrific monsters getting closer... and closer... and closer...

Professional Wrestling

 * The Undertaker: Has made this his trademark,

Video Games

 * Part of Alma's box of tricks in the F.E.A.R. videogames.

Web Comics

 * This VG Cats strip.

Web Original

 * Kirby on episode 7 of There Will Be Brawl.
 * There's a Youtube video which involves a kitten doing this, approaching while the person filming looks away and being unmoving when the camera comes back.
 * Here's a fixed-camera version of the cat in action, and here's a Doctor Who dub of the original.
 * Sculpture, a fan tribute to SCP-173.
 * There is a Creepypasta involving the POV character seeing a figure far away, that gets closer when he blinks. The story ends with the figure just five feet away, with a big nasty grin on its face, and the POV character's eyes watering, trying desperately not to blink...
 * A video on YouTube involves a boy playing a terrified game of peekaboo after bedtime with a clown doll...

Western Animation

 * The Sylvester & Tweety cartoon "Greedy For Tweety" did this: Sylvester is in a hospital bed and can't move, having been given sleeping pills. Every time he opens and closes his eyes, the dog appears closer and closer, wielding a club. It's prime Nightmare Fuel.