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)
Ellen DeGeneres Self - Judge Self - Judge See fewer	The Ellen DeGeneres Show (2003)
Kara DioGuardi Self - Judge Self - Judge See fewer	Get Smart (2008)
Randy Jackson Self - Judge Self - Judge See fewer	The Truth About Cats & Dogs (1996)
Crystal Bowersox Self - Finalist Self - Finalist See fewer	American Idol (2002)
Lee DeWyze Self - Finalist Self - Finalist See fewer	Lee DeWyze: Fight (2014)
Paula Abdul Self Self See fewer	Robots (2005)
Christina Aguilera Self - Musical Guest Self - Musical Guest See fewer	The Voice (2011)
Kris Allen Performer Performer See fewer	Fork (I) (2015)
Fantasia Barrino Self - Musical Guest Self - Musical Guest See fewer	The Color Purple (2023)
Didi Benami Self Self See fewer	Pure Genius (2016)
Ian Bernardo Ian Benardo (as Ian Benardo) Ian Benardo (as Ian Benardo) See fewer	Street Trash (1987)
Edward Boddington Self Self See fewer	American Idol (2002)
Lacey Brown Self Self See fewer	If by 40 (2018)
Kelly Clarkson Self - Performer Self - Performer See fewer	The Kelly Clarkson Show (2019)
Joe Cocker Self - Musical Guest Self - Musical Guest See fewer	Across the Universe (2007)
Dane Cook Performer Performer See fewer	Good Luck Chuck (2007)
Alice Cooper Performer Performer See fewer	Wayne's World (1992)
Tatiana Nicole Del Toro Self Self See fewer	American Idol (2002)
Andrew Garcia Self Self See fewer	JustKiddingFilms (2007)
Barry Gibb Performer Performer See fewer	Grease (1978)
Robin Gibb Performer Performer See fewer	Saturday Night Fever (1977)
Taylor Hicks Self - Performer Self - Performer See fewer	American Idol (2002)
William Hung Performer Performer See fewer	Chinaman's Chance: America's Other Slaves (2008)
Allison Iraheta Performer Performer See fewer	Lost Time (2014)
Janet Jackson Performer Performer See fewer	Poetic Justice (1993)
Casey James Self Self See fewer	American Idol (2002)
Aaron Kelly Self Self See fewer	American Idol (2002)
Renaldo Lapuz Self Self See fewer	American Idol (2002)
Michael Lynche Self Self See fewer	American Idol (2002)
Siobhan Magnus Self Self See fewer	The Eve (I) (2015)
Michael McDonald Performer Performer See fewer	The 40-Year-Old Virgin (2005)
Janet McNamara Self Self See fewer	American Idol (2002)
Bret Michaels Performer Performer See fewer	A Letter from Death Row (1998)
Paige Miles Self Self See fewer	American Idol (2002)
Nick Mitchell Self - Contestant Self - Contestant See fewer	Idol Tonight (2006)
Alanis Morissette Performer Performer See fewer	Dogma (1999)
John Oates Performer Performer See fewer	Ready Player One (2018)
Larry Platt Performer Performer See fewer	West Sagg Story (2019)
Jordin Sparks Performer Performer See fewer	Sparkle (I) (2012)
Katie Stevens Self Self See fewer	Haunt (I) (2019)
Ruben Studdard Performer Performer See fewer	American Idol (2002)
Mark Thompson Announcer Announcer See fewer	The Day After Tomorrow (2004)
Tim Urban Self Self See fewer	Movie 43 (2013)
Luke Broadlick Dancer (uncredited) Dancer (uncredited) See fewer	Magic Mike XXL (2015)