See All the 'America's Got Talent' Guest Judges So Far

You'll be surprised at who AGT picked this week ...

america's got talent guest judges
NBC

Every week, the competition on America's Got Talent gets even more cutthroat. To help make the tough decision of who moves on and who goes home, the four core judges – Simon Cowell, Heidi Klum, Mel B, and Howie Mandel — will make room for one more at the table. The guest judge will help decide which acts go to the next round and get a chance to grant one golden buzzer to the audition of their choice. Their selection will then be awarded a free pass to the live shows.

See who AGT has tapped to be a guest judge so far in season 13:

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1 Judge Cuts Episode 1: Ken Jeong
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Season 13's first guest judge spot went to actor and funnyman Ken Jeong. Ken was a practicing physician and part-time comedian for several years before getting his big break in 2009 as Mr. Chow in . He has made several TV appearances over the years, including on , , and . Additionally, Ken has starred in The Hangover's second and third films in the franchise, hosted the Billboard Music Awards in 2011, and landed a recurring role on NBC's . He has been married to Dr. Tran Ho since 2004.

Golden Buzzer Pick:

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2 Judge Cuts Episode 2: Olivia Munn
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Actress Olivia Munn joined the judging panel in the second round of judge cuts. Olivia got her start in the Hollywood world around 2004, when she appeared in and The Road to Canyon Lake one year later. Now, her film credits include , , , , , and . Later this summer, she will star in the new sci-fi film The Predator alongside Sterling K. Brown, Boyd Holbrook, Jacob Tremblay, and Keegan-Michael Key.

Golden Buzzer Pick:

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3 Judge Cuts Episode 3: Martina McBride
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The country singer was tapped to offer advice to contestants in the third judge cuts episode. Martina caught her big break in the music industry when Garth Brooks gave her the opening spot on his show in the early 1990s. Since then, the country superstar has racked up 14 Grammy nominations, five Country Music Association Awards, an Artist Career Achievement Award, and two triple-platinum sales certificates for her work. Martina is currently finishing up a Christmas album that is set to be released this holiday season, according to .

Golden Buzzer Pick:

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4 Judge Cuts Episode 4: Chris Hardwick
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Chris Hardwick is a comedian, actor, TV host, author, producer, and now the fourth guest judge to join America's Got Talent. He is perhaps best known for his roles hosting shows such as Singled Out, Talking Dead, The Wall, and @midnight with Chris Hardwick. He was recently . After conducting an investigation, NBC has decided to allow Chris to return to his role as host of The Wall this fall. Chris has also since been after the network pulled his program Talking Dead.

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5 14 Things You Didn't Know About 'America's Got Talent'

We've rounded up all the most fascinating facts about America's favorite talent competition.

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