The High School Musical Cast & Zac Efron

One of Disney's most successful endeavors of the 2000s, the High School Musical franchise wasn't just one of the most-watched projects on the Disney Channel; it also launched nearly as many teen pop stars as The Mickey Mouse Club did in the '90s, when Christina Aguilera, Britney Spears, and Justin Timberlake were among the cast members. The High School Musical films starred Zac Efron as Troy Bolton, the captain of the basketball team who discovers a passion for singing; Vanessa Hudgens as Gabrielle Montez, the new girl in town; Ashley Tisdale and Lucas Grabeel as siblings Shar...