If you've never watched the Kids' Choice Awards (the 17th annual show airs this Saturday), you're missing one of TV's most effervescent programs. We're not just talking about the burps. As silly as the show can be—did we mention the Favorite Fart From a Movie Award?—Kids' Choice has become a major destination for A-list Hollywood. Brad Pitt, Michelle Pfeiffer, Madonna, Mel Gibson and Robert De Niro have all walked Nickelodeon's orange carpet. A few years ago, Tom Cruise received the ultimate KCA tribute—he was "slimed" onstage with gallons of green goo. Clearly, many celebrities show up because it's hard to...