Casting About: Kidman Denies Nip/Tucking, and More

• A spokesperson for Nicole Kidman tells the New York Daily News it's "not true" that the Aussie beanpole will guest on the coming season of Nip/Tuck, as claimed last week by series creator Ryan Murphy. Intriguing!• Peyton Manning hosts Saturday Night Live on March 24, with musical guest Carrie Underwood.• Governator Arnold Schwarzenegger puts in an appearance on this Sunday's The Apprentice, as part of the winning team's reward. • Kevin Nealon, Jane Lynch, Richard Kind and Wendie Malick are among those who have been added to the guest-star lineup for Thank God You're Here, NBC's improv comedy-challenge series debuting April 9.