IT'S CHRISMUKKAH IN NEWPORT BEACH ON �THE O.C.� AIRING THURSDAY, DECEMBER 23, ON FOX

Seth has combined Hanukkah and Christmas into his own perfect holiday called �Chrismukkah.� It looks like this holiday season is going to be another smashing success until Summer and Anna force Seth to choose between them. Ryan is weary of the holidays knowing that every other Christmas has involved family fights and watching his mom hit the bottle. He won't have to watch his mom drink this holiday season, but Marissa is having her own problems coping with her family situation and turns to alcohol to drink the holiday away. Kirsten, fed up with her father's antics, takes her first vacation in years while Sandy continues the battle against Caleb's company in the fight to save the Heights on �The Best Chrismukkah Ever� episode of THE O.C. Thursday, Dec. 23 (8:00-9:00 PM ET/PT) on FOX. (OC-113) (TV-PG D)

Cast: Peter Gallagher as Sandy Cohen, Benjamin McKenzie as Ryan Atwood, Mischa Barton as Marissa Cooper, Adam Brody as Seth Cohen, Kelly Rowan as Kirsten Cohen, Tate Donovan as Jimmy Cooper, Melinda Clarke as Julie Cooper, Chris Carmack as Luke and Rachel Bilson as Summer.

Guest Cast: Samaire Armstrong as Anna and Alan Dale as Caleb.