5. Christina Aguilera, "Genie in a Bottle"
In the early Nineties, the Disney Channel assembled an array of young talent for The New Mickey Mouse Club that served as a sleeper cell for the chart comeback of teen pop at the end of the decade. Justin Timberlake and JC Chasez were first out of the gate in 1998 with 'N Sync's initial U.S. hits, followed by Britney Spears in early '99. Christina Aguilera completed the Mouseketeer takeover with her first Number One that summer.