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 Cam Gigandet Guest Star Michael Nouri Guest Star Lamont Thompson Guest Star Paula Trickey Guest Star Scott Krinsky Guest Star David Stifel Guest Star Sandra Marshall Guest Star Erin Foster Guest Star Keli Daniels Guest Star Jonathon Trent Guest Star Josh Schwartz Executive Producer Doug Liman Executive Producer McG Executive Producer David Bartis Executive Producer Robert DeLaurentiis Executive Producer