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 Taylor Handley Guest Star Amanda Righetti Guest Star Alan Dale Actor Rachel Bilson Summer Roberts Actor Melinda Clarke Julie Cooper Actor Chris Carmack Guest Star Kim Oja Guest Star Matt Phillips Guest Star Heidi Van Horne Guest Star Jesse Brune Guest Star Tim Lucason Guest Star Shawn Bernal Guest Star Dita de Leon Guest Star Kara Naomi White Guest Star Mike Wike Guest Star Josh Schwartz Executive Producer Doug Liman Executive Producer McG Executive Producer David Bartis Executive Producer Robert DeLaurentiis Executive Producer