Name	Known for
Dermot O'Leary Self - Presenter Self - Presenter See fewer	The X Factor UK (2004)
Simon Cowell Self - Judge Self - Judge See fewer	Scary Movie 3 (2003)
Cheryl Self - Judge (as Cheryl Cole) Self - Judge (as Cheryl Cole) See fewer	What to Expect When You're Expecting (2012)
Dannii Minogue Self - Judge Self - Judge See fewer	Home and Away (1988)
Louis Walsh Self - Judge Self - Judge See fewer	Spin the Bottle (2003)
The Black Eyed Peas Themselves - Special Guest Themselves - Special Guest See fewer	G.I. Joe: The Rise of Cobra (2009)
Dianna Agron Self - Guest / Self - Quinn Fabray (as The Cast of Glee) Self - Guest / Self - Quinn Fabray (as The Cast of Glee) See fewer	The Family (I) (2013)
Jane Lynch Self - Sue Sylvester (as The Cast of Glee) Self - Sue Sylvester (as The Cast of Glee) See fewer	Wreck-It Ralph (2012)
Kevin McHale Self - Guest / Self - Artie Abrams (as The Cast of Glee) Self - Guest / Self - Artie Abrams (as The Cast of Glee) See fewer	Glee (2009)
Lea Michele Self - Guest / Self - Rachel Berry (as The Cast of Glee) Self - Guest / Self - Rachel Berry (as The Cast of Glee) See fewer	Glee (2009)
Cory Monteith Self - Guest / Self - Finn Hudson (as The Cast of Glee) Self - Guest / Self - Finn Hudson (as The Cast of Glee) See fewer	Glee (2009)
Heather Elizabeth Morris Self - Guest / Self - Brittany S. Pierce (as The Cast of Glee) Self - Guest / Self - Brittany S. Pierce (as The Cast of Glee) See fewer	Glee (2009)
Matthew Morrison Self - Will Schuester (as The Cast of Glee) Self - Will Schuester (as The Cast of Glee) See fewer	Glee (2009)
Chord Overstreet Self - Guest / Self - Sam Evans (as The Cast of Glee) Self - Guest / Self - Sam Evans (as The Cast of Glee) See fewer	Glee (2009)
Amber Riley Self - Guest / Self - Mercedes Jones (as The Cast of Glee) Self - Guest / Self - Mercedes Jones (as The Cast of Glee) See fewer	Glee (2009)
Naya Rivera Self - Guest / Self - Santana Lopez (as The Cast of Glee) Self - Guest / Self - Santana Lopez (as The Cast of Glee) See fewer	Glee (2009)
Mark Salling Self - Guest / Self - Puck (as The Cast of Glee) Self - Guest / Self - Puck (as The Cast of Glee) See fewer	Glee (2009)
Harry Shum Jr. Self - Guest / Self - Mike Chang (as The Cast of Glee) Self - Guest / Self - Mike Chang (as The Cast of Glee) See fewer	Everything Everywhere All at Once (2022)
Jenna Ushkowitz Self - Guest / Self - Tina Cohen-Chang (as The Cast of Glee) Self - Guest / Self - Tina Cohen-Chang (as The Cast of Glee) See fewer	Glee (2009)
Alexandra Burke Self - Special Guest Self - Special Guest See fewer	Curfew (2024)
Briony Albert Self - Lead Dancer Self - Lead Dancer See fewer	Take That: The Circus Live (2009)
Mary Byrne Self - Contestant Self - Contestant See fewer	Celebrity Bainisteoir (2008)
Matt Cardle Self - Contestant Self - Contestant See fewer	Fast Girls (2012)
Rebecca Ferguson Self - Contestant Self - Contestant See fewer	Everything Is Love (2014)
Cher Lloyd Self - Contestant Self - Contestant See fewer	Identity Thief (2013)
Killian Lyrik Self (Choir) Self (Choir) See fewer	Don't Stop Believing (2010)
One Direction Themselves - Contestants Themselves - Contestants See fewer	One Direction: What Makes You Beautiful (2011)
Harry Styles Self - Contestant (as One Direction) Self - Contestant (as One Direction) See fewer	Dunkirk (2017)
Desi Valentine Self - Backing vocalist Self - Backing vocalist See fewer	The Search for John Gissing (2001)