The O.C. was like the stepping stone to so many other, (not as good) teen soap operas.
Chris Pratt as Summer's hippie friend at Brown:
His name was Che Cook and he loved hemp.
Warner Bros. / Via ecleader.org
Paul Wesely as Donnie
He worked with Ryan at the Crab Shack and then pulled a GUN on Luke at a party. Also he was one of many future vampires to appear on the show.
Warner Bros. / Via fanpop.com
Paris Hilton as a random club girl named Kate:
Yes that is Paris taking a selfy with a flip phone.
icouldnthelpbutwonderblog.blogspot.com
Colin Hanks as Grady Bridges:
He was the star of a fictional soap opera called "The Valley" and he had #COOLHAIR.
Warner Bros. / Via complex.com