Peter Gallagher Sandy Cohen Actor Benjamin 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 Wayne Dalglish Guest Star Gary Grubbs Guest Star Brandon Quinn Guest Star Kat Sawyer Guest Star Ashley Benson Guest Star Corey Price Guest Star Chris Dotson Guest Star Kaili Thorne Guest Star Janel Parrish Guest Star Daniel Booko Guest Star Kelly Hare Guest Star Stephen DeCordova Guest Star Daniel Graves Guest Star Josh Schwartz Executive Producer Doug Liman Executive Producer McG Executive Producer David Bartis Executive Producer Robert DeLaurentiis Executive Producer