In one of the first season episodes ("The Proposal"), the main characters are watching an unnamed "chick-flick". According to "The O.C." website, the movie was "The Triplets of Bellville", but a closer examination will show that the credits are not from the movie at all. Instead, the credits being run in the theater in the background are just shout-outs to crew members (i.e. Susan Godfrey).
This is the first episode in the first season to be directed by a woman.