Johnny Depp will give his kids, nine-year-old Lily-Rose and six-year-old John, a thrill after bosses at kids TV network Nickelodeon tapped him to lend his voice to hit show Spongebob Squarepants. The actor will provide the voice of surfer Jack Kahuna Laguna in an upcoming episode of the animated series in a special titled SPONGEBOB VS. The Big One.