How do you know you've made a splash on Broadway? You start getting visits from celebs. Case in point: Rosie O'Donnell and wife Kelli popped in on
Idol wunderkind Clay Aiken, who recently made his Broadway debut in
Spamalot. We caught the couple enthusiastically congratulating Aiken backstage at the Shubert Theatre on March 11. The O'Donnells will be heading to the Mexican Riviera next week on one of their fab R Family Vacations cruises, while Aiken will continue entertaining droves of his devoted fans on the Great White Way.