Kramer mentions to Jerry that he was ambushed by the "neighborhood kids", including Joey Zambino, who Kramer previously babysat in the season 7 episode "The Wait Out".
When George asks Kramer if he wants to go to Queens to fix his fathers screen door Kramer says yes as he's getting a drink out of Jerry's fridge. Then Kramer walks away and in the next shot the fridge is closed without anyone closing it.
Elaine: I'm not buying a computer from you.
George: There's porn.
Elaine (thinks about it for a second): Even so.
Jerry: George, letting my emotions out was the best thing I've ever done. Sure, I'm not funny anymore, but there's more to life than making shallow, fairly obvious observations.
Frank: Starting tonight we're having a little sales contest. The loser gets fired. The winner gets a Water Pik.
Jerry: You've heard me yell.
George: Not really. Your voice kind of raises to this comedic pitch.
Patty: I've never seen you mad.
Jerry: I get peeved.
Patty:I would like to see you get really mad.
George: (referring to Jerry and Elaine) You know, all these years, I've always wanted to see the two of you get back together.
Elaine: Well, that's because you're an idiot.
George: (Walking in as Jerry is kneeling in order to propose to Elaine) Something wrong with your leg?
Elaine: If you weren't Jewish, you wouldn't be interested in me.
Mr. Lippman: You are wrong. I'll prove it.
Elaine: Oh, no. Don't!
Mr. Lippman: I renounce Judaism!
Elaine: Oy, vey!
Frank: SERENITY NOW! SERENITY NOW!
George: "Serenity now?" What's that?
Frank: I got a tape on how to lower my blood pressure. Whenever it starts to get too high, the man on the tape said to say, "SERENITY NOW!"
George: Are you supposed to shout it?
Frank: The man on the tape wasn't specific.
Jerry: 1%? They can kiss 1% of my ass!
Lloyd: Serenity now. Insanity later.
Jerry:I don't know what's happening to me.
Kramer: Simple. You let out one emotion, all the rest will come
with it. It's like Endora's box.
Jerry: That was the mother on Bewitched. You mean Pandora.
Kramer: Yeah, well, she... had one, too.
Kramer: Y'all come back reeeeal –
(Jerry slams door)
Jerry: Oh, you think I'm lying about this?
Patty: I think you are.
Jerry: Well, I'm not.
Patty: Yes, you are, liar.
Jerry: Oh, stop it.
Patty: OK, liar.
Jerry: That's enough!
Patty: Ooh that was good.
Jerry: Really? It felt good.
Elaine: What's the matter?
Jerry: It's Patty.
Elaine: Jerry, you break up with a girl every week.
Jerry: What is this salty discharge?
Elaine: Oh my God, you're crying.
Jerry: This is horrible. I care.
Jerry: I love you Kramer.
Kramer: Yeah I love you too buddy.
Elaine: What happened to the new Jerry?
Jerry: He doesn't work here anymore.
Frank: Hoochie mamma! Hoochie mamma!
Frank: Serenity now!
Kramer: Serenity now!
George: Serenity now!
Kramer: Hoochie mamma.
Guest stars Bruce Mahler and Matt McCoy also appeared together in the movie "Police Academy 6: City Under Siege."
After finding out that this is the last season for the show, many asked if Jerry and Elaine getting together is the right ending. Elaine makes her opinion clear at the end of this episode.
Steve Koren mentions in Writers magazine that Serenity now is based on a true story.
When Frank tells George about how he became interested in computers, he mentions he saw a movie called ""The Net", with the girl from the bus". He is referring to the movie The Net, starring Sandra Bullock, who also starred in Speed, about a city bus armed with bombs by a terrorist.
The sales contest Frank Costanza institutes (where the highest seller is rewarded and the lowest is fired) is a parody of the 1991 movie Glengarry Glen Ross.
: When George says his mother always said "Why can't you be more like Lloyd Braun".
Lloyd Braun is the Entertainment Chairman@ABC. George's quote and the stories of George and Lloyd growing up together and competing is a reference to ABC being NBC's chief ratings rival.