Created by Josh Schwartz, FOX's The O.C. premiered on Aug. 5, 2003 and ran for four seasons until Feb. 22, 2007. Starring Mischa Barton, Benjamin McKenzie, Adam Brody and Rachel Bilson as four teens living in the affluent community of Newport Beach, California, the primetime teen soap was broadcast in more than 50 countries and won 12 Teen Choice Awards.
Mischa Barton: Then
Born in London and raised primarily in New York City, former child model Barton played wealthy and troubled teen Marissa Cooper. Her character -- who romanced Benjamin McKenzie's Ryan Atwood and Olivia Wilde's Alex Kelly -- was killed in a car accident at the end of Season 3.