Marissa meets Ryan for the first time, sparks immediately fly.

Season: 1, Episode: 1
Running Time: 2:49
Last Updated: July 16, 2009

Seth puts his foot in his mouth while he and Ryan bond playing video games.

Season: 1, Episode: 1
Running Time: 1:16
Last Updated: July 16, 2009

After Seth embarrasses him at a party, Ryan saves Seth from getting beat up.

Season: 1, Episode: 1
Running Time: 3:07
Last Updated: July 16, 2009

Ryan has a run-in with Marissa's boyfriend when he shows up to a cotillion with her.

Season: 1, Episode: 4
Running Time: 2:31
Last Updated: July 16, 2009

Seth and Summer's argument leads to the gang running off the road and staying in a grungy motel til the car is fixed.

Season: 1, Episode: 7
Running Time: 2:38
Last Updated: July 16, 2009

Ryan rescues Marissa who runs off into a strange town after learning the truth about her boyfriend.

Season: 1, Episode: 7
Running Time: 3:07
Last Updated: July 16, 2009

Marissa and Ryan get stuck on top of a ferris wheel which leads them to their first real kiss.

Season: 1, Episode: 9
Running Time: 3:10
Last Updated: July 16, 2009

Seth tries to choose between dating Summer or Anna, while Ryan takes Marissa along when he visits his brother in prison.

Season: 1, Episode: 11
Running Time: 43:28
Last Updated: November 16, 2009

Rooney performs on The O.C.

Season: 1, Episode: 15
Running Time: 2:54
Last Updated: July 16, 2009

Oliver confesses his intentions with Marissa to Ryan which leads them to a fist fight that Marissa walks in on.

Season: 1, Episode: 17
Running Time: 2:23
Last Updated: July 16, 2009

Seth makes a fool of himself to prove his affections for Summer on Valentine's Day.

Season: 1, Episode: 20
Running Time: 1:46
Last Updated: July 16, 2009

Luke breaks up with Julie; and when he talks to Ryan about it, Marissa overhears.

Season: 1, Episode: 22
Running Time: 2:46
Last Updated: July 16, 2009

Jem performs on The O.C.

Season: 1, Episode: 27
Running Time: 3:04
Last Updated: July 16, 2009

Summer and Marissa bond by the pool while enjoying ice cold cocktails

Season: 2, Episode: 1
Running Time: 2:20
Last Updated: July 16, 2009

Marissa finally lets her mother know what is on her mind after a summer of giving her the silent treatment.

Season: 2, Episode: 1
Running Time: 1:43
Last Updated: July 16, 2009

Ryan makes a date with Marissa to catch up after school; Summer gives Seth the brush off.

Season: 2, Episode: 2
Running Time: 1:20
Last Updated: July 16, 2009

After finding out about Marissa's affair, Ryan tells her he would rather be friends.

Season: 2, Episode: 2
Running Time: 0:56
Last Updated: July 16, 2009

Seth makes a fool of himself and puts himself in danger to prove his love for Summer at the carnival.

Season: 2, Episode: 2
Running Time: 2:58
Last Updated: July 16, 2009

The Walkmen perform on The O.C.

Season: 2, Episode: 3
Running Time: 1:35
Last Updated: July 16, 2009

The Killers perform on The O.C.

Season: 2, Episode: 4
Running Time: 1:46
Last Updated: July 16, 2009

Modest Mouse performs on The O.C.

Season: 2, Episode: 7
Running Time: 1:34
Last Updated: July 16, 2009

In the midst of a storm, Marissa tells Alex that she is serious about her, and Summer rushes to find Seth.

Season: 2, Episode: 14
Running Time: 2:10
Last Updated: July 16, 2009

Death Cab for Cutie performs on The O.C.

Season: 2, Episode: 20
Running Time: 0:56
Last Updated: July 16, 2009

When Seth ends up on a Spring Break TV show, his health, and his relationship with summer, are put in danger.

Season: 2, Episode: 21
Running Time: 1:31
Last Updated: July 16, 2009

Things turn ugly when Trey misinterprets Marissa's kindness.

Season: 2, Episode: 21
Running Time: 2:36
Last Updated: July 16, 2009

T.I. performs on The O.C.

Season: 2, Episode: 21
Running Time: 1:36
Last Updated: July 16, 2009

Caleb has a heart attack, while across town, Sandy confronts Kristen about her drinking problem.

Season: 2, Episode: 23
Running Time: 1:31
Last Updated: July 16, 2009

Ryan confronts his brother when he about Trey's attempted assult on Marissa

Season: 2, Episode: 24
Running Time: 3:02
Last Updated: July 16, 2009

The friends begin their senior year, but the cops want to know who shot Trey. Ryan tries to protect Marissa.

Season: 3, Episode: 1
Running Time: 44:13
Expires: April 12, 2009
Last Updated: November 02, 2009

Sandy frets over Kirsten's attachment to her rehab friend. Marissa gets bad news from the new dean.

Season: 3, Episode: 2
Running Time: 44:19
Expires: April 12, 2009
Last Updated: November 02, 2009

Marissa and Summer face off against Taylor Townsend when she tries to take over the spring carnival.

Season: 3, Episode: 2
Running Time: 2:06
Last Updated: July 16, 2009

Ryan and Marissa enjoy a night to remember.

Season: 3, Episode: 3
Running Time: 44:34
Expires: April 12, 2009
Last Updated: November 02, 2009

Marissa adjusts to a new school, and Seth's feud with Dean Hess gets Summer in trouble.

Season: 3, Episode: 4
Running Time: 44:27
Expires: April 12, 2009
Last Updated: November 02, 2009

When a friend at her new school tries to comfort Marissa, Ryan overreacts.

Season: 3, Episode: 4
Running Time: 2:34
Last Updated: July 16, 2009

Ryan makes a life-changing decision with Sandy's support, and Dean Hess tries to ruin Ryan's future.

Season: 3, Episode: 5
Running Time: 44:37
Expires: April 12, 2009
Last Updated: November 02, 2009

Taylor ruins Seth's night by keeping Summer away. Marissa's new friendships at public school worry Summer.

Season: 3, Episode: 6
Running Time: 44:03
Expires: April 12, 2009
Last Updated: November 02, 2009

During a show by rock band THE SUBWAYS, Taylor's behavior causes a major rift between Seth and Summer.

Season: 3, Episode: 7
Running Time: 44:29
Expires: April 12, 2009
Last Updated: November 02, 2009

The Subways perform on The O.C.

Season: 3, Episode: 7
Running Time: 3:55
Last Updated: July 16, 2009

As seniors at Harbor and Newport prepare their college applications, the friends decide what to do about their futures.

Season: 3, Episode: 8
Running Time: 44:42
Expires: April 12, 2009
Last Updated: November 02, 2009

Ryan works an internship for Sandy, and Summer and Seth try to impress Brown University.

Season: 3, Episode: 9
Running Time: 44:37
Expires: April 12, 2009
Last Updated: November 02, 2009

Kirsten tries to make amends with Julie, and Seth invents another holiday.

Season: 3, Episode: 10
Running Time: 43:41
Expires: April 12, 2009
Last Updated: November 02, 2009

The friends try to get Marissa back into their school. Sandy makes a decision that could change Marissa's fate.

Season: 3, Episode: 11
Running Time: 44:26
Expires: April 12, 2009
Last Updated: November 02, 2009

Marissa's sister, Kaitlin, returns home with attitude and a few secrets.

Season: 3, Episode: 12
Running Time: 43:40
Expires: April 12, 2009
Last Updated: November 02, 2009

Just as Seth realizes that things are going to well, Marissa's little sister shows up at the door.

Season: 3, Episode: 12
Running Time: 1:58
Last Updated: July 16, 2009

Kaitlin stirs up trouble for the gang as she prepares to celebrate her birthday.

Season: 3, Episode: 13
Running Time: 43:40
Expires: April 12, 2009
Last Updated: November 02, 2009

Kaitlin gets ready for her party, and Seth tries to hide his pot use from Ryan.

Season: 3, Episode: 13
Running Time: 3:08
Last Updated: July 16, 2009

Summer discovers the truth about Seth; Kirsten and Julie take their matchmaking business too far.

Season: 3, Episode: 14
Running Time: 43:58
Expires: April 12, 2009
Last Updated: November 02, 2009

When Johnny gets drunk and climbs up a cliff, Ryan tries to talk him down.

Season: 3, Episode: 14
Running Time: 1:47
Last Updated: July 16, 2009

Tragedy strikes the friends. Johnny's cousin arrives. Ryan questions his and Marissa's relationship.

Season: 3, Episode: 15
Running Time: 44:26
Expires: April 12, 2009
Last Updated: November 02, 2009

Sadie and Ryan go on a road trip to find one of Johnny's relatives and Ryan returns to his old ways.

Season: 3, Episode: 16
Running Time: 43:58
Expires: April 12, 2009
Last Updated: November 02, 2009

Tom Vek performs on The O.C.

Season: 3, Episode: 16
Running Time: 0:46
Last Updated: July 16, 2009

Ryan struggles to decide whom to invite to his birthday party. Julie and Dr. Roberts come clean with Summer and Marissa.

Season: 3, Episode: 17
Running Time: 43:56
Expires: April 12, 2009
Last Updated: November 02, 2009

Sadie gives Ryan a birthday gift, and something to think about.

Season: 3, Episode: 17
Running Time: 1:41
Last Updated: July 16, 2009

Ryan's nemesis returns to Newport. Taylor tries to solve Seth and Summer's problem.

Season: 3, Episode: 18
Running Time: 44:28
Expires: April 12, 2009
Last Updated: November 02, 2009

Ryan tries to move on with Sadie, but Seth's concern for Marissa gets in the way.

Season: 3, Episode: 19
Running Time: 44:42
Expires: April 12, 2009
Last Updated: November 02, 2009

The kids receive their college acceptance and rejection letters, forcing them to make decisions.

Season: 3, Episode: 20
Running Time: 44:33
Expires: April 12, 2009
Last Updated: November 02, 2009

Marissa wakes up after a night with Vochek, and a stoned Seth forgets to invite Summer to dinner.

Season: 3, Episode: 20
Running Time: 2:36
Last Updated: July 16, 2009

After Seth doesn't get into Brown, Seth tries to break if off with Summer rather than have her jeopardize her future for him.

Season: 3, Episode: 20
Running Time: 1:38
Last Updated: July 16, 2009

Ryan visits his mom. Taylor and Summer wonder why Seth is keeping secrets.

Season: 3, Episode: 21
Running Time: 44:28
Expires: April 12, 2009
Last Updated: November 02, 2009

The friends go to their college orientations. Seth sees Anna at Brown, and they instantly connect.

Season: 3, Episode: 22
Running Time: 43:52
Expires: April 12, 2009
Last Updated: November 02, 2009

The senior prom brings out the best and the worst in everyone.

Season: 3, Episode: 23
Running Time: 43:58
Expires: April 12, 2009
Last Updated: November 02, 2009

When Ryan shows up at Volchok’s looking for the stolen money, Volchok tries to provoke a fight.

Season: 3, Episode: 23
Running Time: 2:40
Last Updated: July 16, 2009

Ryan makes a deal with Volchok, and Marissa visits Kaitlin at boarding school.

Season: 3, Episode: 24
Running Time: 43:47
Expires: April 12, 2009
Last Updated: November 02, 2009

The end of senior year brings the excitement of graduation and the anticipation of new lives in college and beyond.

Season: 3, Episode: 25
Running Time: 44:34
Expires: April 12, 2009
Last Updated: November 02, 2009

Volchock tries to force Ryan and Marissa's car off the road.

Season: 3, Episode: 25
Running Time: 2:49
Last Updated: July 16, 2009

Taylor tries to explain to Summer why she is sleeping in Summer's bed.

Season: 4, Episode: 2
Running Time: 1:57
Last Updated: July 16, 2009

Taylor is going home, but before she leaves she has some advice for Summer about Seth.

Season: 4, Episode: 2
Running Time: 2:10
Last Updated: July 16, 2009

It's Thanksgiving morning at the Cohen house, and the family is still dealing with what happened in Mexico.

Season: 4, Episode: 3
Running Time: 42:43
Expires: May 10, 2009
Last Updated: November 16, 2009

After hunting him for months, Ryan gets a chance to finally confront Volchok.

Season: 4, Episode: 3
Running Time: 3:10
Last Updated: July 16, 2009

Che and Summer attempt to free a group of the school's lab bunnies.

Season: 4, Episode: 5
Running Time: 1:26
Last Updated: July 16, 2009

Ryan’s fantasy about Taylor might just ruin breakfast.

Season: 4, Episode: 6
Running Time: 1:33
Last Updated: July 16, 2009

Seth tries to track down Che for a little revenge, while Kaitlin gets revenge of her own by throwing a party.

Season: 4, Episode: 6
Running Time: 3:09
Last Updated: July 16, 2009

At the kegger, Ryan tries to find Taylor, Seth finally finds Che, and Kaitlin's rival admits her defeat.

Season: 4, Episode: 6
Running Time: 2:36
Last Updated: July 16, 2009

Seth proposes to Summer… before they find out the results of the pregnancy test.

Season: 4, Episode: 8
Running Time: 3:12
Last Updated: July 16, 2009

Taylor tells Summer that she's lost her way , and they discover that Panakes has given birth to bunnies.

Season: 4, Episode: 16
Running Time: 1:28
Last Updated: July 16, 2009

Seth, Summer, Ryan, andTaylor all say goodbye to each other.

Season: 4, Episode: 16
Running Time: 2:23
Last Updated: July 16, 2009