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 Logan Marshall-Green Guest Star George Lucas Guest Star Michael Cassidy Guest Star Marguerite Moreau Guest Star Nikki Griffin Guest Star Matt McKenzie Guest Star Cynthia Avila Guest Star Navi Rawat Guest Star Gilbert Glenn Brown Guest Star Anthony Jennings Guest Star Josh Schwartz Executive Producer Doug Liman Executive Producer McG Executive Producer David Bartis Executive Producer Robert DeLaurentiis Executive Producer J.J. Philbin Writer