Peter Gallagher Sandy Cohen Actor Ben McKenzie Ryan Atwood Actor Kelly Rowan Kirsten Cohen Actor Adam Brody Seth Cohen Actor Mischa Barton Actor Rachel Bilson Summer Roberts Actor Melinda Clarke Julie Cooper Actor Alan Dale Actor Raymond Chao Guest Star Ryan Donowho Guest Star Michael Nouri Guest Star Autumn Reeser Taylor Townsend Guest Star Jeff Hephner Guest Star Johnny Lewis Guest Star Rosalind Chao Guest Star Michael Mantell Guest Star Tiffany Thornton Guest Star Paula Trickey Guest Star Tyson Chambers Guest Star Dana Davis Guest Star Miguel Sagaz Guest Star Josh Schwartz Executive Producer Doug Liman Executive Producer McG Executive Producer David Bartis Executive Producer Robert DeLaurentiis Executive Producer