These are the five that make American Idol run so smoothly. But one of them is leaving after season nine.
During the first night of American Idol's Hollywood auditions, Ellen DeGeneres made a great impression on viewers. She's funny and she's fresh.
After just one night, Ellen DeGeneres seems right at home on the judge's panel. We loved her funny and fresh opening performance.
Welcome to the world's most popular show, Joe Jonas. The cute singer guest judges an episode of American Idol.
We love Kristin Chenoweth. She guest judges an episode of American Idol, prior to the season's Hollywood round.
Victoria Beckham serves as a guest judge on season nine of American Idol. We're not sure what she knows about singing.
Welcome to American Idol, Neil Patrick Harris. The hilarious actor serves as a season nine guest judge.
Shania Twain is seated next to the American Idol judges you know and love in this shot from season nine.

Simon Cowell Biography

New American Idol Judges
Simon Cowell is our favorite American Idol judge. He's sometimes mean, but always honest and entertaining. He also knows how to put Paula... More »
Simon Phillip Cowell
Full Name
Brighton, East Sussex, England

Simon Cowell Quotes

It was a little bit like Chihuahua trying to be a tiger.

Simon Cowell [following David Archuleta's attempt to sing a Chris Brown song]

I’d pack your suitcase.

Simon Cowell [to Jason Castro, after the former sung "I Shot the Sheriff"]