Guest Stars Fantasia Barrino as Herself Ruben Studdard as Himself Carrie Underwood as Herself David Cook as Himself Jordin Sparks as Herself Lee DeWyze as Himself Phillip Phillips as Himself Scotty McCreery as Himself Kris Allen as Himself Taylor Hicks as Himself Kelly Clarkson as Herself Caleb Johnson as Himself Candice Glover as Herself Nick Fradiani as Himself Trent Harmon as Himself Lauren Alaina as Herself Katharine McPhee as Herself Jennifer Hudson as Herself Danny Gokey as Himself Paula Abdul as Herself Steven Tyler as Himself Kellie Pickler as Herself Clay Aiken as Himself Colton Dixon as Himself Elliott Yamin as Himself Randy Jackson as Himself Nicki Minaj as Herself Blake Lewis as Himself Justin Guarini as Himself Allison Iraheta as Herself Bo Bice as Himself Carly Smithson as Herself Constantine Maroulis as Himself James Durbin as Himself Melinda Doolittle as Herself Kimberley Locke as Herself William Hung as Himself Casey James as Himself Jessica Sanchez as Herself Simon Cowell as Himself Ellen DeGeneres as Herself Barack Obama as Himself Brandon Rogers as Himself Tamyra Gray as Herself Pia Toscano as Herself Ace Young as Himself Chris Daughtry as Himself Brian Dunkleman as Himself Clark Beckham as Himself Sanjaya as Herself Skylar Taine as Himself LaToya London as Herself Kree Harrison as Herself Joshua Ledet as Himself George Huff as Himself Amber Holcomb as Herself Kara DioGuardi as Herself Marley Fletcher as Himself Bucky Covington as Himself Diana DeGarmo as Herself