Peter Gallagher Sandy Cohen Actor Ben McKenzie Ryan Atwood Actor Kelly Rowan Kirsten Cohen Actor Adam Brody Seth Cohen Actor Mischa Barton Marissa Cooper Actor Tate Donovan Jimmy Cooper Actor Linda Lavin Guest Star Alan Dale Caleb Nichol Actor Rachel Bilson Summer Roberts Actor Melinda Clarke Julie Cooper Actor Chris Carmack Guest Star Amanda Righetti Guest Star Navi Rawat Guest Star Eric Balfour Guest Star Cynthia Avila Guest Star Doug Ballard Guest Star Henry Kingi Jr. Guest Star Rodrigo Rojas Guest Star Josh Schwartz Executive Producer Doug Liman Executive Producer McG Executive Producer David Bartis Executive Producer Allan Heinberg Writer