The last thing people might have expected from “NCIS: LA” stars Chris O’Donnell and LL Cool J is a reality series where professional child dancers invite their parents onto the dance floor, but it ...

Chris O’Donnell was on set at “NCIS: Los Angeles,” checking his emails, when co-star LL Cool J started looking over his shoulder. O’Donnell happened to be reading about a reality TV idea that his ...