Exclusive! Simon Cowell on 'X Factor' Chemistry and Nicknames

"Extra's" Terri Seymour caught up with her good friend Simon Cowell to talk about the chemistry on the "X Factor" set -- and about the recent Jennifer Lopez and Marc Anthony divorce news.

"I didn't see it coming," Cowell said about the couple's split. "They always seemed to get on. They would bicker, but everyone bickers."

Speaking of bickering, how are "X Factor" judges Paula Abdul and Nicole Scherzinger getting along? "No rivalry whatsoever," declared Cowell, adding, "You know we've got names for them now -- Sylvester the cat, and Tom from Tom and Jerry. Sylvester's Nicole and Tom is Paula."

Cowell does admit he's nervous about finding a true star on the show. "I mean, after all this effort, if you can't find a star then we're all mugs. There are certain contestants, mostly girls, when they come out we call them D.O.A.s -- too young, too cute, too talented, literally dead on arrival!"

Seymour also asked Cowell if he asked FOX to reschedule the World Series. "Yes. I didn't realize that they were quite sort of fixed on their dates."

Tune in to all the action when "The X Factor" premieres September 21 on FOX.