In the episode "The Dawn Patrol", it's pretty much a done deal that the Nana is going to be there for graduation. But in this episode, she's not there. Since there was two tickets per student available, there certainly was a seat available.
When Marissa is saying goodbye to everyone after swimming in the pool of the model home, it is daylight. When she & Ryan leave it is night & very dark. How come it got so dark so quickly?
Goof: When Sandy is talking to Kirsten in the kitchen, at one point when he is talking it is obvious that his face isn't moving at all.
Goof: It makes absolutely no sense that Heather is randomly with Volchok now. Marissa saved her from being raped by Volchok's friends back in "The Dawn Patrol".
It is possible that Heather does not remember this happening since she was drugged at the time.
Goof: When the kids went to the model home, steam was coming off of the pool, insinuating that the heating was on in the house. However, in a house that isn't being rented/hasn't been bought, it's unlikely that they would keep the heating on in the house let alone the pool.
Marissa: Well, as fun as it usually is making fun of Seth, I think it's time I should go.
Seth: Ah, here come the waterworks.
Summer: I can't believe that I'm saying goodbye to you.
Marissa: I know.
Summer: I love you so much.
Marissa: I love you too.
Summer: You're my best friend forever, okay? And if you end up hooking up with some hot Greek shipping heir, I'm so your maid of honour.
Marissa: I know. (to Seth) See you.
Seth: All right. See you later.
Summer: Guys, hug!
Summer: Oh my God, I can't believe I had a crush on you, Atwood. No offence.
Ryan: None taken, biatch.
Marissa (to Ryan): So, what do you think? (laughs) You think it's the stupidest idea ever.
Ryan: No, it sounds great. It's what you need.
Marissa: That means a lot to me. You know, I wouldn't have thought you'd be going to college.
Ryan: And you'll be doing manual labor. Well, we are just doing what we need to.
Ryan: You know, this is gonna sound weird, but can I drive you to the airport? You were the first person I met here, I'd kinda like to be the last person to say goodbye.
Marissa: You know, it's funny. I was gonna ask you the same thing.
Seth: Dad, remember when I called you the worst father ever? Right after that I swung by your place of work, I smoked a joint, I forgot to put it out and now your office fits into an ashtray.
Taylor: So I just stopped by to say farewell.
Summer: You're leaving for the Sorbonne already?
Taylor: Oh no, not quite. Sung Ho and I decided to spend the summer in his family's village. We're defusing land mines in the DMZ.
Seth: That's a way to spend your summer vacation.
Summer: But what about the after-grad party? I mean you already planned it.
Taylor: As a gift. To the class of 2006. SO my work here is done. It has been a pleasure being second circle core.
Seth: I think you can join the inner circle.
Taylor: I can? Oh my god! The Fab Five!
Seth: OK, this is awkward. I was sort of kidding about the inner circle thing.
Summer: I don't think Cohen's the one that needs to get lei-ed.
Taylor: Au contraire, Summer. Have I told you about my after-after-prom party with Sung Ho and Yung Nam? It was hot and spicy and, let's just say I had my very own Korean barbeque.
Summer: I am so off kim chee.
Sandy: ALL RIGHT, SETHY! ALL RIGHT!
Volchok: I asked you for clothes, not opinions. You chicks and your opinions, man.
Julie: Oh my God. Cooper family hug.
Volchok: Thanks, Ranger Rick. But save the speeches for the Boy Scouts.
Ryan: Ranger Rick. Ow, that hurts. Whatever, man. We're done.
Sandy: How about a hug?
Sandy: I love you, kid.
Seth: I can't say I love you to another man... but I have much affection for you as well.
Ryan: You okay?
Ryan: So we are talking about that night. Last time we were here, I was leaving. And now you are.
Marissa: That night. Did you ever think we did end up together?
Ryan: You're saying it's over? (Marissa laughs) You never know. Right.
Marissa: I'm sorry... For all of the craziness.
Ryan: I wouldn't have done it any differently. Except maybe Oliver.
Marissa (laughs): Me too.
Ryan (to Summer): You actually invited me to Holly's beach house.
Summer: Oh my God!
Seth (in a dark voice): You said she invited me. (all but Seth laugh) I'm not faring well on this trip down memory lane.
Summer: You guys ever wonder what life would be like if Atwood never came here?
Marissa: I definitely never would have talked to Seth.
Summer: Oh, hell no, me either.
Seth: Ha ha ha ha ha ha ha!
Ryan: See? You own me one, buddy.
Seth: Me? (points to Marissa) She'd still be dating the dude who shaves his chest.
Kirsten: Then it's back to the Newport Group, business as usual?
Sandy: Well, how 'bout not? I went back to my old office, the place looked worse than ever. The guy in there was beaten down, exhausted… oh, it was a thing of beauty.
Julie: Marissa, I just want you to know that, everything I ever did, good, bad, or otherwise, I did it for you. So that you could have a better life than I had. And I know I wasn't perfect. I mean, the thing with Luke and trying to frame Ryan for attempted homicide…
Marissa: Mom, I love you. Ok, just know that. (both crying)
Julie: Oh sweetheart, that's all I wanted. I love you too.
Marissa: Besides, you know the strength it takes to start over, to go out on my own? That has to come from being Julie Cooper's daughter.
Julie: I am spirited, aren't I?
Kaitlin: It's pretty cool that you're letting her go.
Julie: And it's pretty cool that you came back so she can leave.
Kaitlin: Well I don't love Marissa that much. Just, all the older kids, they just see me as Marissa's little sister. And they've graduated. And now I can rule Harbor. (Julie rolls her eyes)
Seth: Ryan got a car? Really? I've been waiting 3 years for a car! I'm supposed to be the spoiled one.
Dawn: Ok, I'm gonna try to say goodbye without losing it.
Ryan: Why don't we just, not say goodbye. How about "see you soon?"
Dawn: See you soon.
Ryan: See you soon?
Dawn (laughs): See you soon. Love you.
Ryan: Love you too.
Dawn: Hey, Seth, good to see you again.
Seth: Good to see you too! It means a lot that you made it down. (silence ) I was being sincere.
Marissa: Ryan, I brought Volchok on us, it's only fair I help get rid of him. Come on, we're in this together, ok? (takes Ryan's hand) One last time.
Ryan: One last time.
Marissa: I need a new life. I need a change.
Summer: Well, scrubbing decks would definitely be a change.
Volchok: (to Ryan) If I go down, you're going down with me.
Sandy: We both screwed up.
Seth: We're both usually so awesome.
Sandy: Excuse me, forgive me, but I'm a very proud father, and I, I want to say a few words. I think I can speak for Kirsten and the other parents here tonight, when I tell you kids how thrilled we are to share this wonderful touchstone with you (applause). I know the last few years have been a little rough for us (everyone groans and laughs). There's been tragedy, and comedy, and first loves, and broken hearts. Family members were lost, and found. It hasn't all been perfect, but we're all family here. So cheers.
Dr. Kim: And it has been my pleasure to teach you, to watch you grow, and now enter the world. Good luck. It is my honor to present to you the Harbor School class of 2006!
Taylor: But if I can leave you all with one final word of advice: Illegitimis nil carborundum. Don't let the bastards get you down!
Ryan: Hey! Lets go graduate!
Summer: Is everything ok at home?
Seth: Sandy Cohen and I got a little man-boy lovin' going on.
Seth: This is it dude. We're never gonna have to step foot in this stupid school or this stupid student lounge again.
Ryan: Nostalgic already, huh?
Seth: Never gonna have to see any of these shoe-peeing, shallow, water polo playing… (bumps into another guy)
Guy : Get out of my way geek. What is that, a dress?
Seth: It's a graduation gown, you're wearing one too.
Guy : Queer admitted to wearing a gown!
Seth: When they announce my name, uhh, could you… not do that cheer you did for me when I won capture the flag at parent's weekend?
Sandy: Which cheer was that? Oh, oh, oh! (rapping) Check out my boy Cohen. Can you believe how he's growin'? The competition away he's blowin'!
Seth: That's the one, please don't do that. Ever.
Summer: I can't believe in a couple of hours we're gonna be on that stage in our caps and gowns!
Taylor: Well except for Seth, who may be in an orange jumpsuit.
Seth: I'm gonna go the car and get my iPod, listen to sad, depressing music for a change.
Ryan: This looks familiar.
Marissa: It shouldn't, they rebuilt it completely when you burned it down.
Marissa (to Ryan; her last words): No, stay. Don't leave.
Kaitlin: Well, since my grades went from 'B's to 'A's, I was actually wondering (points to her chest) if you could change my 'A's to 'B's.
Taylor: I kind of liked being second circle core.
Seth: I think you can join the inner circle.
This is most likely a reference to Autumn Reeser, who joined the main cast as of this episode.
This episode marks the final appearance of Mischa Barton on the series as Marissa Cooper. Although she is shown in a flashback during the series finale.
The song playing when Marissa dies in Ryan's arms is 'Hallelujah' which is also the song which played in 'The Model Home' after she asked Ryan if she could stay the night with him and he refused. The song then was sung by Jeff Buckley as Marissa was crying but is now sung by Imogen Heap.
When Marissa asks Ryan's opinion on if she should go to her dad to serve on a yacht going to the Greek Islands, Ryan offered Marissa a ride to the airport, because "you're the first person I met, and I want to be there last to say goodbye". At the end of the episode, Ryan is the last person that Marissa sees as she passes away in his arms.
"I Don't Care What My Friends Say" by Chris Holmes
"Breaking The Ice" by Mojave 3
"Speeding Cars" by Imogen Heap
"Bossy" by Kelis
"Chapters" by Appogee
"Hallelujah" by Imogen Heap
When Summer tells Marissa if she ever happened to meet a Greek shipping heir, then she (Summer) had to be the maid of honor. This is an inside joke between the people that Mischa Barton hangs out with in real life. Mary Kate Olsen and Paris Hilton both have dated Greek shipping heirs.