"American Idol" host Ryan Seacrest, left, and judges Jennifer Lopez, Harry Connick Jr.
Let's catch up with some of the winners: Seacrest, left, named Nick Fradiani the winner of season 14 of "American Idol" in May 2015.
While his single "Beautiful Life" was the official theme for the seventh FIFA Women's World Cup, his 2016 album "Hurricane" didn't generate much energy.
He parted ways with his record label last year and is currently an indie artist.
Caleb Johnson never landed in the bottom three while he was on the show.
He is the owner of entertainment production house named Syco, executive of record label A&R.
Simon Cowell is considered to be one of the most influential people in the world.
The Asheville, North Carolina, native went up against Jena Irene and was crowned the winner of season 13.
His debut album, "Testify," was released in August 2014 and had the lowest first-week sales of any winner.
This week's dose of nostalgia was no doubt a welcome surprise for Stamos, who admitted to Ellen De Generes in 2009 that his relationship was brief but memorable.
"It's so funny, because I sort of forgot [about our romance].
PHOTOS: '90s TV stars then and now Appropriately on Throwback Thursday, Abdul, 51, followed her ex's post with a then-and-now photo of the duo.