star Adam Brody became so disinterested in the show by season three that the writers gave his character, Seth Cohen, a weed addiction to explain the actor's lack of enthusiasm on-screen. AdvertisementAdam Brody as Seth Cohen on season one of "The O.C." According to the oral history book, Schwartz and the actors didn't have the same energy and interest that they brought to season one. AdvertisementAdam Brody as Seth Cohen on season three, episode 13 of "The O.C." In the book, Schwartz said that Brody was so disengaged during season three that he delivered a performance with less energy, which was uncharacteristic of Seth.

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Persons: Adam Brody, Josh Schwartz, Seth, —, Seth Cohen, Brody, Alan Sepinwall, Schwartz, Stephanie Savage, Ryan Atwood, Ben McKenzie, Cohen, Ryan, Fox, didn't, Savage, — McKenzie, Mischa Barton, Marissa Cooper, Rachel Bilson, Summer Roberts, Bob DeLaurentis, I'm, we're Organizations: Service, Fox, Newport Locations: Chino , California, Newport Beach