I don't know that I could ever pick a favorite on the O.C., I'm wishy-washy like that but I totally think there's something about Ryan that gets you on rewatches more than the first time around. Back in 2004 I was young and he was hung up on Marissa and they were never as entertaining as Seth and Summer, but... I don't know. Now when I go back my favorite thing about the entire show is Kirsten and Ryan and their burgeoning trust for each other.