Email this Photo 1 of 28 images Next 2007: The Year in TV 'Musical' Goes Mainstream After "High School Musical 2" became the highest-rated basic cable broadcast ever, with an audience of more than 17 million, series stars Zac Efron and Vanessa Hudgens were catapulted into the maelstrom of mainstream celebrity. Oh, and those naked pics of Hudgens that found their way onto the Internet didn't hurt, either. Read More Close MORE 2007 HIGHLIGHTS Best & Worst TV Shows What made the list? Milestones Hollywood's young turks turn 70 ALSO ON MSN Is Brit Crazy? Weigh in on 'The Big Debate' See 'Divas' in Concert Rihanna, Pussycat Dolls and more advertisement