Hosted by actor/comedian John Leguizamo, Nickelodeon's Mega Music Fest will feature celebrities like Colbie Caillat, Wyclef Jean, and The Roots performing never-before-seen duets with Dora the Explorer, the cast of 'Yo Gabba Gabba!', and Kai-Lan, plus special appearances by The Laurie Berkner Band, The Fresh Beat Band, and even a few surprise cameos. John Leguizamo will need YOUR preschooler's help to make sure the show goes on!
Full Cast of The Nickelodeon Mega Music Fest
Justin Bieber
Himself
Phil McGraw
Himself
Donna Pieroni
The Crossing Guard
Sherri Shepherd
Herself