With the New York Times heralding the trend on its front page, new TV models on display at CES, broadcasters announcing distribution and sponsorship deals, and "Avatar"'s record take at the box office piling up steadily, the hype for 3-D is at its climax. But how will marketers fit in? Ad Age tracked down some folks in the know to find out the essentials on 3-D ad production and get those burning questions answered.