On Tuesday, the American pop band Black Eyed Peas released a new ad campaign to help promote the band's latest hit single: "The Time (Dirty Bit)." In their recent music video, lead singer will.i.am points a Blackberry PlayBook at a billboard showing a videogame version of himself, and out pops a 3D hologram of the character who proceeds to monkey around the skyscraper. What was a special effect in