Sleepy-eyed before, the crowd perks up. Not to the point of full-on "Biebermania" o anything. It is, after all, 10 o'clock on a Thursday morning, and of the hundreds packed into New York's Hammerstein Ballroom, roughly three dozen are kids who've managed to score VIP seats. Bieber is performing at Nickelodeon's 2010 upfront presentation, where the youth-centric network is announcing its new slate of programming.
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