Peter Gallagher Sandy Cohen Actor Ben McKenzie Ryan Atwood Actor Kelly Rowan Kirsten Cohen Actor Adam Brody Seth Cohen Actor Mischa Barton Actor Tate Donovan Actor Samaire Armstrong Guest Star Melinda Clarke Julie Cooper Actor Alan Dale Actor Rachel Bilson Summer Roberts Actor Chris Carmack Guest Star Bonnie Somerville Guest Star Josh Kloss Guest Star Navi Rawat Guest Star Gina Gallego Guest Star Demetrius Navarro Guest Star Santiago Douglas Guest Star Bradley Stryker Guest Star Josh Schwartz Executive Producer Doug Liman Executive Producer McG Executive Producer David Bartis Executive Producer Robert DeLaurentiis Executive Producer