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 Jeri Ryan Guest Star Eric Mabius Guest Star Autumn Reeser Taylor Townsend Guest Star Kayla Ewell Guest Star Ryan Donowho Guest Star Johnny Lewis Guest Star Rich Voll Guest Star Erin Foster Guest Star Charles Rahi Chun Guest Star Jessica Irvine Drake Guest Star Josh Schwartz Executive Producer Doug Liman Executive Producer McG Executive Producer David Bartis Executive Producer Robert DeLaurentiis Executive Producer Ian Toynton Director