What do Jerry O'Connell, Serena Williams, Brandon Routh, Brooke Shields and Louis Gossett Jr. have in common besides being famous and successful? They're doing guest voices this fall on Kids' WB shows. It's yet to be announced, but we can tell you that Jerry will be heard as the voice of Nightwing -- that's the grownup version of Batman's juvenile sidekick, Robin, with a much cooler costume -- on "The Batman." That show has already featured big-screen Superman Routh as The Everywhere Man. Kids will hear Brooke as Edward Nigma's (that's The Riddler) former girlfriend, Julie, on the series, and Gossett will be heard in a two-parter as Lucius Fox. Meanwhile, tennis star Serena will be heard as Queen Athena in a forthcoming "Loonatics Unleashed." And we're told "Legion of Super Heroes" and "Shaggy & Scooby-Doo Get a Clue" will be featuring some big names ahead as well.