Greyson Chance performs "Waiting Outside the Lines."

Selena Gomez & the Scene performs "Who Says."

Mitchel Musso performs "Get Away" and participates in a sketch.

Tony Hawk guest stars and does a sketch on the show while the main cast of the show tries to make him do something extreme. He finally flies out at the end of the show.

Jacob Latimore performs "Like 'Em All".

Colbie Caillat performs "Brighter Than the Sun".

Far East Movement performs "Rocketeer", with special guest Miguel.

Kicking Daisies performs "Keeping Secrets".

Hot Chelle Rae Performs "Tonight Tonight".

Iyaz performs "Pretty Girls" featuring Mann.

Pia Toscano performs "This Time" and Leigh-Allyn Baker and Mia Talerico participate in a few sketches.

Justin Bieber performs "Mistletoe".

Christina Grimmie performs "Advice".

Cole and Dylan Sprouse participate in several sketches.

The New Boyz performs "Meet My Mom".