The scene where Marissa and Alex are admiring Marissa's new tattoo was added to the storyline after Mischa Barton decided to get the tattoo done for real. She had it done without first checking with the show's producers, and they were initially angry with her for having it done, but then decided that Marissa should also get a tattoo and added the scene to explain its sudden appearance.
Seth: Turns out I don't make a very convincing super hero.
Summer: (about sketchbook) Princess Sparkle, you are not going to believe this.
Seth: I know that it's totally creepy. I know that. I'm sorry. It's was just a very long summer and I'm sorry and I will destroy all of them right now. I just need to find my X-Acto knife.
Gail: As you can see, it's a bit of a fixer-upper.
Kirsten: That's one way to put it.
Sandy: Who are you kidding, Gail? This place is a first-class dump. And I like it!
Seth: Hey! Brian Gatwood. AKA Kid Chino!
Summer: I don't wanna hear it. What are you guys? Like Kavalier and Gay?
Seth: (impressed) That was funny.
Summer: I know.
Seth: Are they open to some sort of menage-a-threeway as in the film Summer Lovers?
Summer Lovers is a 1982 film in which a couple travel to Greece for a summer and meet, then develop a relationship with, a young girl.
Peter Gallagher also starred in Summer Lovers.