Steve Martin, Eugene Levy, Bonnie Hunt, Tom Welling, Piper Perabo, Hilary Duff, Carmen Electra, Jaime King, Taylor Lautner, Alyson Stoner, Jonathan Bennett, Jacob Smith, Liliana Mumy, Morgan York, Kevin G. Schmidt
Steve Martin and Bonnie Hunt return as heads of the Baker family who, while on vacation, find themselves in competition with a rival family of eight children, headed by Eugene Levy,