The cast was revealed Wednesday on ABC's "Good Morning America." For a show that has reached an increasingly older audience, ABC added an injection of youth with reality stars Nicole "Snooki" Polizzi of "Jersey Shore" and Ozzy's kid Jack Osbourne.
Harper has defied odds with her survival since being diagnosed earlier this year with brain cancer. She recently filmed a movie role and joined a Nick at Nite reunion of "The Mary Tyler Moore" cast.
Other contestants are Bill Nye, the "Science Guy"; "Pretty Little Liars" actor Brant Daugherty; former NFL wide receiver Keyshawn Johnson; singer and actress Christina Milian; actress Elizabeth Berkley; "High School Musical" actor Corbin Bleu; "Glee" actress Amber Riley; country comic Bill Engvall; and "King of Queens" actress Leah Remini.
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