Peter Gallagher Sandy Cohen Actor Ben McKenzie Ryan Atwood Actor Rachel Bilson Summer Roberts Actor Adam Brody Seth Cohen Actor Kelly Rowan Kirsten Cohen Actor Melinda Clarke Julie Cooper Actor Autumn Reeser Taylor Townsend Actor Willa Holland Kaitlin Cooper Actor Kevin Sorbo Guest Star Gary Grubbs Guest Star Brandon Quinn Guest Star Todd Sherry Guest Star Jim Pirri Guest Star Daniel Graves Guest Star David Paluck Guest Star Kirstin Pierce Guest Star Christopher Gehrman Guest Star Don Williams Guest Star Curtis Mark Williams Guest Star Easton Gage Guest Star Tyshawn Bryant Guest Star Mischa Barton Guest Star Michael Gross Guest Star Josh Schwartz Executive Producer Doug Liman Executive Producer McG Executive Producer David Bartis Executive Producer Robert DeLaurentiis Executive Producer