Psyched for the Teen Choice Awards this Sunday? Well, we've got a few behind-the-scenes secrets to share with you about the show, hosted by Hilary Duff and Nick Cannon.

-- High School Musical 2 stars, Zac Efron, Vanessa Hudgens, Monique Coleman, Lucas Grabeel, Olesya Rulin, and Kaycee Stroh will be on hand to accept a special award for the movie's record-breaking debut.

-- Performances will include Fergie ("Big Girls Don't Cry"), Kelly Clarkson ("Never Again"), and Avril Lavigne ("Girlfriend"). Plus, Shop Boyz will have the honor of closing the show with "Party Like A Rockstar."

-- Justin Timberlake will receive a special TCA, the "Ultimate Choice Award," via satellite for his work in movies, music, and TV. In case you've lost count, Justin has collected 18 TCAs since 1999 (12 with N*SYNC -- the most in TCA history!

Be sure to tune in to the Teen Choice Awards on Sunday, August 26 at 8 p.m. on FOX!