Name	Known for
Ryan Seacrest Self - Host Self - Host See fewer	American Idol (2002)
Simon Cowell Self - Judge Self - Judge See fewer	Scary Movie 3 (2003)
Paula Abdul Self - Judge Self - Judge See fewer	Robots (2005)
Randy Jackson Self - Judge Self - Judge See fewer	The Truth About Cats & Dogs (1996)
Tom Anderson Self Self See fewer	Funny People (2009)
Jeff Beck Self Self See fewer	The Boat That Rocked (2009)
Jack Black Self Self See fewer	School of Rock (2003)
Helena Bonham Carter Self Self See fewer	Sweeney Todd: The Demon Barber of Fleet Street (2007)
Bono Self Self See fewer	Across the Universe (2007)
Michael Bublé Self Self See fewer	An Audience with Michael Bublé (2010)
Nancy Cartwright Bart Simpson (voice) Bart Simpson (voice) See fewer	The Simpsons (1989)
Dan Castellaneta Homer Simpson (voice) Homer Simpson (voice) See fewer	The Simpsons (1989)
Kelly Clarkson Self Self See fewer	The Kelly Clarkson Show (2019)
Ellen DeGeneres Self Self See fewer	The Ellen DeGeneres Show (2003)
Céline Dion Self Self See fewer	Titanic (1997)
Il Divo Themselves Themselves See fewer	Sortilegio (2009)
Melinda Doolittle Self Self See fewer	Billy: The Early Years (2008)
Earth Wind & Fire Themselves Themselves See fewer	Ready Player One (2018)
Kyle Gass Self Self See fewer	Tenacious D in the Pick of Destiny (2006)
Josh Groban Self Self See fewer	Troy (2004)
Lorie Jackson Self Self See fewer	American Idol (2002)
LaKisha Jones Self Self See fewer	Heroes Among Us: The 2009 Hero Awards (2009)
Julie Kavner Marge Simpson (voice) Marge Simpson (voice) See fewer	The Simpsons (1989)
Hugh Laurie Self Self See fewer	House (2004)
Annie Lennox Self Self See fewer	The Lord of the Rings: The Return of the King (2003)
Blake Lewis Self Self See fewer	Blake Lewis Is Shitting in My Bathroom (2009)
Madonna Self (archive footage) Self (archive footage) See fewer	A League of Their Own (1992)
Eric McCormack Self Self See fewer	Will & Grace (1998)
Gwyneth Paltrow Self Self See fewer	Shakespeare in Love (1998)
Elvis Presley Self (archive footage) Self (archive footage) See fewer	Girls! Girls! Girls! (1962)
Chris Richardson Self Self See fewer	November Rule (2015)
Seal Self - Performer Self - Performer See fewer	Batman Forever (1995)
Yeardley Smith Lisa Simpson (voice) Lisa Simpson (voice) See fewer	The Simpsons (1989)
Jordin Sparks Self - Contestant Self - Contestant See fewer	Sparkle (I) (2012)
Phil Stacey Self Self See fewer	CMT Insider (2004)
Ben Stiller Self Self See fewer	Zoolander (2001)
Ruben Studdard Self Self See fewer	American Idol (2002)
Mark Thompson Announcer Announcer See fewer	The Day After Tomorrow (2004)
Carrie Underwood Self Self See fewer	Soul Surfer (2011)