(introducing himself to Gwen)
Jerry: Hi. I'm Jerry. You might not know it to look at me, but I can run really...really fast.
This most likely is a reference to Season 6 episode "The Race".
"Festivus: The Holiday for the Rest of Us" is the name of a book by Allen Salkin about the celebration of Festivus in the real world.
Jerry says that Gwen always looks good when sitting in the back booth at the coffee shop, and that he'll try to always sit there with her. However, the two subsequent times that they eat there, they sit in the booth directly behind the cash register.
At the Festivus meal, Mr Kruger recognizes Kramer as Dr Van Nostren. This is a clever reference to "The Slicer," when Kramer, in his butcher coat, poses as a dermatologist doing a cancer screening, to help George get a picture of Kruger with his shirt off.
Frank said that for Festivus, everyone tells how the people at the table have disappointed them. However, at the end, Frank is the only one who does this, and they go on to the feats of strength.
NOTE: Actually, he says that you gather your family around you and tell them all the ways they have disappointed you -- in other words, it is only the head of the family that has this privilege.
When Elaine is at the betting place where she has her standard fake phone number, a sign on the glass window says "No Spoken Bets Allowed." However, once she gives the guys Kramer's number, she places a verbal bet at Belmont, without any paperwork!
The sign says "No Verbal Bets Allowed." but any one who's ever been to the track or an OTB knows that the only way to bet is to verbally say what horse you want to bet on unless you use an automated machine which wasn't available at that OTB.
When Elaine looks at Kramer's original H&H bagel business card that he claimed was from 10 years ago when he worked there, the card says "Cosmo Kramer" bagel technician. If the card was printed 10 years earlier, why would it have his first name on it, which he never used and kept secret from everyone until two years earlier.
At the end when Kruger calls Kramer "van Nostrand". Kramer agrees quietly, but when Frank announces the feets of strength, he says the one wrestling him is "Mister Kramer," but why didn't Kruger seem suspicious.
Jerry (surprised): Gwen, what are you doing here?
Gwen: Kramer told me you were here.
Kramer (excited): Another Festivus miracle!
Frank: At the Festivus dinner, you gather your family around and tell them all the ways they have disappointed you over the past year.
Kramer: And is there a tree?
Frank: No. Instead, there's a pole. Requires no decoration. I find tinsel distracting.
Kramer: Frank, this new holiday of yours is scratching me right where I itch.
Jerry: Why didn't you ever mention this?
Kramer: Jerry, I didn't want you to know I was out of work. It's embarrassing.
Kramer: H&H wouldn't let us use their bathroom while we were picketing. It put a cramp in our solidarity.
Jerry: When George was growing up, his father hated all the commercial and religious aspects of Christmas, so he made up his own holiday.
Elaine: Oh... and another piece of the puzzle falls into place.
Jerry: You might not know it to look at me, but I can run really really fast.
(Back on strike, trying to keep people from getting bagels)
Kramer: Heeey, no-bagel-no-bagel-no-bagel-no-bagel-no-bagel, heey!
Jerry: You don't need the card. High-end hoagie outfit like that, it's all computerized! (Snaps) They're cloning sheep now.
Kramer: (Correcting) No, they're not cloning sheep. It's the same sheep! I saw Harry Blackstone do that trick with two goats and a handkerchief on the old Dean Martin show!
George: (on Gwen) She's a two-face.
Jerry: Like the Batman villain?
George: (condescending) If that helps you.
Jerry: So if I ask her out again, I don't know who's showing up -- the good, the bad, or the ugly.
George: I got him Yankees tickets! He got me a piece of paper saying, "I've given your gift to someone else!"
Jerry: Nice cuff links, by the way.
George: Office Christmas gift. I tell you, this Human Fund is a gold mine!
Jerry: That's not a French cuff shirt, you know.
George: I know. I cut the button off and poked a hole with a letter opener.
George: I don't really celebrate Christmas. I celebrate Festivus.
Frank: George, you're forgetting how much Festivus has meant to us all. I brought one of the cassette tapes. (Franks pushes play, George as a child celebrating Festivus is heard.)
Frank: Read that poem.
George: (Complaining) I can't read it. I need my glasses!
Frank: You don't need glasses, you're just weak! You're weak!
Estelle: Leave him alone!
Frank: Alright, George. It's time for the feats of strength.
(George has a break down)
George: No! No! Turn it off! No feats of strength! (Gets up and starts running out of the coffee shop) I hate Festivus!
Frank: We had some good times.
George: I'm embracing my roots.
Jerry: They got you on the 20G's?
George: Busted cold.
Kramer: (shocked by Elaine's face) Yama hama. It's fright night.
Frank: Many Christmases ago, I went to buy a doll for my son. I reached for the last one they had, but so did another man. And as I rained blows upon him I realized there had to be another way.
Kramer: What happened to the doll.
Frank: It was destroyed, but out of this came a new holiday, 'a Festivus for the rest-of-us.'
Kramer: That must of been some doll.
Frank: SHE was!
Frank: It's Festivus… for the rest of us!
For the first time, a second after the director is credited, the show goes into commercials.
For the first time, all the main credits are showed in one scene, instead of usually being separate between scenes.
This episode marks Bryan Cranston's final appearance as Tim Whatley on the series.
Colin Malone who played the 'Sleazy Guy' in this episode is actually the host of a Public Access TV Show called "Colin's Sleazy Friends"
It was announced around the time of the airing of this episode, that this would be Seinfeld's final season, and that there would be only 12 more new episodes.
Jerry: Two Face..like the "Batman" Villain?
Jerry mentions that his girlfriend goes through strange changes, Her face gets very dim in certain light, and he parallels this to the Two Face. Two Face is a Batman villain, and this makes sense that he would mention this, being that Seinfeld is a very big Comic Book buff, and Batman is a comic book character.