The O.C.
S01E25
“The Shower”
Kirsten. Marissa. Neither is the hostess with the mostest. But they reluctantly host Julie's wedding show just the same. Seth's get-acquainted lunch with Summer's dad is a FEMA-sized disaster.
Wedding
2 EPS 
The O.C.
S04E09
“The My Two Dads”
Warm hearts, cold feet: Seth and Summer each look for a way to call off the wedding. Who will crack first? Ryan's biological father plays the Big-C card in hopes his son will see him.
Back to School
1 EP
The O.C.
S02E02
“The Way We Were”
It's back to school for Seth and Ryan, who want to win back the attention they once had from Summer and Marissa. With opportunity beckoning, Hailey tells Jimmy about her plans to move in order to pursue her unfulfilled ambitions with fashion. Hoping to keep her near, Jimmy does…
Birthday
3 EPS
The O.C.
S02E19
“The Rager”
It's Trey's birthday and Marissa, anxious to help Trey and Ryan forge a relationship, throws a birthday party for Trey at Caleb's mansion that turns out to be a rager. Sandy and Carter hit the waves together and decide to double-date and Summer discovers Reed's true identity,…
The O.C.
S03E17
“The Journey”
A little Cohen arm-twisting convinces Ryan that, yeah, he should do something special for his 18th birthday. So who's he going to invite to the party at The Bait Shop? Sadie? For sure. Marissa? Well...
The O.C.
S04E12
“The Groundhog Day”
Free Newport Chuck! Che - with more than activism on his mind - enlists Seth in a plan to spring a groundhog from it's Feb. 2 rites. Kirsten has a 40th-birthday party... and reveals another reason to celebrate.
Valentine's Day
3 EPS
The O.C.
S02E12
“The Lonely Hearts Club”
Sandy tries to make up for keeping Rebecca's return a secret from Kirsten by showering her with Valentine's Day gifts. Zach, Summer and Seth head to San Diego to pitch their comic book idea, and Seth is determined to use the trip to get Summer back. Julie returns from her…
The O.C.
S03E15
“The Heavy Lifting”
Life goes on. Love goes on. But how can anyone focus on Valentine's Day after Johnny's tragedy? Well, maybe love and understanding are the medicines everyone needs now. Even so, nothing will be easy.
The O.C.
S04E13
“The Case of the Franks”
Julie and Gordon? Or Julie and Frank? Summer and Seth? Or Summer and George? No, make that GEORGE. Mysteries of the heart (and the meddling of others) unfold as Valentine's Day nears.
Graduation
1 EP
The O.C.
S03E25
“The Graduates”
Caps, gowns, and the ending nobody in Newport saw coming.
Thanksgiving
2 EPS
The O.C.
S01E11
“The Homecoming”
Used to be Seth couldn't find a girl. Now he has two - Anna and Summer show up for Thanksgiving. Ryan also has double trouble, as he and Marissa visit his old neighborhood and encounter an ex-flame.
The O.C.
S04E03
“The Cold Turkey”
Julie is no longer invited. But guess who is coming to dinner: Homeless men, recruited by Summer, show up for the Cohen Thanksgiving. Ryan will be there, too - if he doesn't first commit murder when he learns where Volchok is.
Hanukkah
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The O.C.
S01E13
“The Best Chrismukkah Ever”
Seth Cohen invents the greatest hybrid holiday in television history.
The O.C.
S02E06
“The Chrismukkah That Almost Wasn't”
The whole gang is invited to Chrismukkah at the Cohens, but Seth's favorite holiday is nearly ruined as secrets are revealed that will change the Cohen family forever. Summer and the gang make a plan to save Chrismukkah.
The O.C.
S03E10
“The Chrismukkah Bar Mitz-vahkkah”
Seth's a man with a holiday plan: Hold an honorary bar mitzvah for Ryan and donate the funds to Johnny's surgery. Now try to convince Ryan to do it... and persuade Johnny to accept it. Also: Julie + Summer's dad? Stay tuned!
Christmas
1 EP
The O.C.
S01E17
“The Rivals”
People who won't be on each other's Christmas-card list: Ryan and Oliver. Their rivalry for Marissa intensifies, with Ryan risking his standing at Harbor to unmask Oliver's true character.
New Year's Eve
2 EPS
The O.C.
S01E14
“The Countdown”
Seth's grand run to reach Summer before midnight. Teen-drama NYE at its finest.
The O.C.
S04E08
“The Earth Girls Are Easy”
Seth is clueless about what to do for New Year's Eve. Solution? Crash the Ryan-Taylor road trip to Vegas. Now add pregnancy tests, a space-alien rave, thefts, misunderstandings, pursuits and a marriage proposal and it's time to welcome 2007!
Dedicated guides
The O.C. Valentine's Day episodes
The O.C. Hanukkah episodes
The O.C. Birthday episodes
The O.C. Thanksgiving episodes
The O.C. New Year's Eve episodes
The O.C. Wedding episodes
Where to watch The O.C.
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