http://video.news.sky.com/skynews/video/ The third installment of the teen-TV hit "High School Musical: Senior Year" has graduated top of the class during its first weekend on the big screen. By now, even if you're not one of the millions of adoring teenage fans, you will have heard of the phenomenon that is High School Musical. But can it appeal to an older crowd? Sky's Steve Hargrave put the question to the all-singing, all-dancing stars of the film.
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