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 Chris Pratt Guest Star José Zúñiga Guest Star William Abadie Guest Star Kim Oja Guest Star Wayne Dalglish Guest Star Corey Price Guest Star Zach Schenkkan Guest Star Jordan Mantell Guest Star Gil Glasgow Guest Star Jack Guzman Guest Star Artem Chigvintsev Guest Star Jeffrey Drew Guest Star Josh Schwartz Executive Producer Doug Liman Executive Producer McG Executive Producer David Bartis Executive Producer Robert DeLaurentiis Executive Producer