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Judge, "American Idol"
Jennifer Lopez
Slaven Vlasic/Getty Images
Judge, "American Idol"
Keith Urban
AP Photo/Chris Pizzello
Judge, "American Idol"
Christina Aguilera
NBC
Judge/Mentor, "The Voice"
Cee Lo Green
NBC
Judge/Mentor, "The Voice"
Adam Levine
NBC
Judge/Mentor, "The Voice"
Blake Shelton
NBC
Judge/Mentor, "The Voice"
Simon Cowell
Fox
Judge/Mentor, "The X Factor"
Demi Lovato
Fox
Judge/Mentor, "The X Factor"
Kelly Rowland
Fox
Judge/Mentor, "The X Factor"
Paulina Rubio
Fox
Judge/Mentor, "The X Factor"
Heidi Klum
NBC
Judge, "America's Got Talent"
Mel B
NBC
Judge, "America's Got Talent"
Howard Stern
NBC
Judge, "America's Got Talent"
Howie Mandel
NBC
Judge, "America's Got Talent"
Tyra Banks
CW Network
Host/Judge, "America's Next Top Model"
Jewel
Jason Merritt/Getty Images
Judge, "The Sing Off"
Ben Folds
Jason Kempin/Getty Images
Judge, "The Sing Off"
Shawn Stockman
Janette Pellegrini/Getty Images
Judge, "The Sing Off"