The X Factor returned to screens on Saturday night, with a new judging line-up and a number of acts going through to the next stage of the competition after some big audition moments onstage.
On Saturday night's show the acts that made the biggest impression were Danny Tetley, the duo Miss Understood, teenager Molly Scott, chart blast-from-the-past Janice Robinson and perhaps Williams' biggest fan, Andy Hofton.
Tetley, a 37-year-old barman, had tried out for Cowell on Pop Idol 17 years ago with no success.
But his reunion with the music mogul proved to be a happy one, as the big-voiced barman brought the house down with his cover of And I Am Telling You. He received hugs from Williams, Tomlinson and Field and four 'yeses' from the judges.
Duo Miss Understood wowed all the judges with their performance of Juicy Fruit and dance routine, with Cowell declaring that they had the X Factor.
Miss Understood's Stephan Benson and Jeffrey Okyere had previously made it to the semi-finals of Britain's Got Talent as part of dance act Myztikal.
Sixteen-year-old Scott, singing It's a Man's Man's Man's World, also received four nods of approval from the panel.
Fifty-year-old Livin' Joy singer Robinson sang her Nineties dancefloor hit Dreamer, with Cowell saying she deserved Britain's Got Talent's "golden buzzer".
Hofton was joined by Williams for a cover of his hit Angels, describing the performance as "a lifetime ambition". Impressed with Hofton's have-a-go heart, the judges put him through.
Elsewhere, teenagers Kezia Povey and Charlotte Lee were told that the solo artist route was not for them, before being handed a possible girl group lifeline.
The show continues on Virgin Media One and ITV on Sunday night at 8:00pm.